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12764705960 = 235472967481
BaseRepresentation
bin10111110001101010…
…11111010010101000
31012221121001020201102
423320311133102220
5202120231042320
65510343540532
7631215132116
oct137065372250
935847036642
1012764705960
115460386576
122582a5a748
13128570ab66
148913daab6
154ea975175
hex2f8d5f4a8

12764705960 has 32 divisors (see below), whose sum is σ = 28727087400. Its totient is φ = 5104727040.

The previous prime is 12764705957. The next prime is 12764705971. The reversal of 12764705960 is 6950746721.

It can be written as a sum of positive squares in 4 ways, for example, as 10160236804 + 2604469156 = 100798^2 + 51034^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155420 + ... + 222900.

Almost surely, 212764705960 is an apocalyptic number.

12764705960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12764705960 is an abundant number, since it is smaller than the sum of its proper divisors (15962381440).

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

12764705960 is a wasteful number, since it uses less digits than its factorization.

12764705960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72221 (or 72217 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 12764705960 in words is "twelve billion, seven hundred sixty-four million, seven hundred five thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 4729 9458 18916 23645 37832 47290 67481 94580 134962 189160 269924 337405 539848 674810 1349620 2699240 319117649 638235298 1276470596 1595588245 2552941192 3191176490 6382352980 12764705960