21,390,764

2² × 1951 × 2741

21,390,764 factors as 2^2 × 1951 × 2741. Its 12 positive divisors give a proper-divisor sum of 16,075,924, so this integer is deficient. The Collatz stopping time is 120 steps.

Prime Factor Structure

Factorization String 2^2 × 1951 × 2741

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 37,466,688

Proper Divisor Sum 16,075,924

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #21390727 ← → #21390767

Radix Representation

Decimal	21390764
Binary	1010001100110010110101100 (25 bits)
Octal	0o121462654
Hexadecimal	0x14665AC

Divisor Catalog (12)

1 2 4 1,951 2,741 3,902 5,482 7,804 10,964 5,347,691 10,695,382 21,390,764

Collatz Trajectory (120 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

21,390,764 10,695,382 5,347,691 16,043,074 8,021,537 24,064,612 12,032,306 6,016,153 18,048,460 9,024,230 4,512,115 13,536,346 6,768,173 20,304,520 10,152,260 5,076,130 2,538,065 7,614,196 3,807,098 1,903,549 5,710,648 2,855,324 1,427,662 713,831 2,141,494 1,070,747 3,212,242 1,606,121 4,818,364 2,409,182 1,204,591 3,613,774 1,806,887 5,420,662 2,710,331 8,130,994 4,065,497 12,196,492 6,098,246 3,049,123 9,147,370 4,573,685 13,721,056 6,860,528 3,430,264 1,715,132 857,566 428,783 1,286,350 643,175 1,929,526 964,763 2,894,290 1,447,145 4,341,436 2,170,718 1,085,359 3,256,078 1,628,039 4,884,118

More profiles

Browse other published profiles and their separate link collections.

No other profiles in this collection.

← Previous Integer #21,390,763 Browse Full Index Next Integer #21,390,765 →