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12760478838 = 232708915491
BaseRepresentation
bin10111110001001010…
…10111010001110110
31012221022002111012100
423320211113101312
5202113140310323
65510113202530
7631134165132
oct137045272166
935838074170
1012760478838
115458a59688
122581560446
13128488aac3
14890a1a3c2
154ea3dc943
hex2f8957476

12760478838 has 12 divisors (see below), whose sum is σ = 27647704188. Its totient is φ = 4253492940.

The previous prime is 12760478837. The next prime is 12760478879. The reversal of 12760478838 is 83887406721.

It is a happy number.

12760478838 is a `hidden beast` number, since 1 + 27 + 604 + 7 + 8 + 8 + 3 + 8 = 666.

It is a super-3 number, since 3×127604788383 (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12760478837) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 354457728 + ... + 354457763.

It is an arithmetic number, because the mean of its divisors is an integer number (2303975349).

Almost surely, 212760478838 is an apocalyptic number.

12760478838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12760478838 is an abundant number, since it is smaller than the sum of its proper divisors (14887225350).

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

12760478838 is a wasteful number, since it uses less digits than its factorization.

12760478838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708915499 (or 708915496 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 12760478838 in words is "twelve billion, seven hundred sixty million, four hundred seventy-eight thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 9 18 708915491 1417830982 2126746473 4253492946 6380239419 12760478838