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12739555930 = 254572787649
BaseRepresentation
bin10111101110101011…
…00011001001011010
31012212211201111100211
423313111203021122
5202042311242210
65504044521334
7630461303323
oct136725431132
935784644324
1012739555930
115448168a22
12257655024a
13128044359a
1488bd3144a
154e865838a
hex2f756325a

12739555930 has 16 divisors (see below), whose sum is σ = 22981386600. Its totient is φ = 5084669952.

The previous prime is 12739555867. The next prime is 12739555937. The reversal of 12739555930 is 3955593721.

It can be written as a sum of positive squares in 4 ways, for example, as 12372335361 + 367220569 = 111231^2 + 19163^2 .

It is not an unprimeable number, because it can be changed into a prime (12739555937) 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 7 ways as a sum of consecutive naturals, for example, 1389255 + ... + 1398394.

Almost surely, 212739555930 is an apocalyptic number.

12739555930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12739555930 is a deficient number, since it is larger than the sum of its proper divisors (10241830670).

12739555930 is a wasteful number, since it uses less digits than its factorization.

12739555930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788113.

The product of its (nonzero) digits is 1275750, while the sum is 49.

The spelling of 12739555930 in words is "twelve billion, seven hundred thirty-nine million, five hundred fifty-five thousand, nine hundred thirty".

Divisors: 1 2 5 10 457 914 2285 4570 2787649 5575298 13938245 27876490 1273955593 2547911186 6369777965 12739555930