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12728956604 = 22713137255253
BaseRepresentation
bin10111101101011010…
…00111011010111100
31012212002202222211012
423312231013122330
5202032103102404
65503025414352
7630302226440
oct136655073274
935762688735
1012728956604
115442189551
122572a9a3b8
13127b1a1cb0
1488a772820
154e7762a6e
hex2f6b476bc

12728956604 has 48 divisors (see below), whose sum is σ = 27616440768. Its totient is φ = 4998855168.

The previous prime is 12728956571. The next prime is 12728956613. The reversal of 12728956604 is 40665982721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77759 + ... + 177494.

It is an arithmetic number, because the mean of its divisors is an integer number (575342516).

Almost surely, 212728956604 is an apocalyptic number.

12728956604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12728956604 is an abundant number, since it is smaller than the sum of its proper divisors (14887484164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12728956604 is a wasteful number, since it uses less digits than its factorization.

12728956604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255414 (or 255412 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 12728956604 in words is "twelve billion, seven hundred twenty-eight million, nine hundred fifty-six thousand, six hundred four".

Divisors: 1 2 4 7 13 14 26 28 52 91 137 182 274 364 548 959 1781 1918 3562 3836 7124 12467 24934 49868 255253 510506 1021012 1786771 3318289 3573542 6636578 7147084 13273156 23228023 34969661 46456046 69939322 92912092 139878644 244787627 454605593 489575254 909211186 979150508 1818422372 3182239151 6364478302 12728956604