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12890796 = 2234392447
BaseRepresentation
bin110001001011…
…001010101100
3220020220211220
4301023022230
511300001141
61140143340
7214366332
oct61131254
926226756
1012890796
117305056
124397b50
1328945b9
1419d7b52
1511e9766
hexc4b2ac

12890796 has 24 divisors (see below), whose sum is σ = 30159360. Its totient is φ = 4285392.

The previous prime is 12890791. The next prime is 12890809. The reversal of 12890796 is 69709821.

It is not an unprimeable number, because it can be changed into a prime (12890791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4045 + ... + 6491.

It is an arithmetic number, because the mean of its divisors is an integer number (1256640).

Almost surely, 212890796 is an apocalyptic number.

It is an amenable number.

12890796 is an abundant number, since it is smaller than the sum of its proper divisors (17268564).

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

12890796 is a wasteful number, since it uses less digits than its factorization.

12890796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893 (or 2891 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12890796 is about 3590.3754678306. The cubic root of 12890796 is about 234.4732187096.

The spelling of 12890796 in words is "twelve million, eight hundred ninety thousand, seven hundred ninety-six".

Divisors: 1 2 3 4 6 12 439 878 1317 1756 2447 2634 4894 5268 7341 9788 14682 29364 1074233 2148466 3222699 4296932 6445398 12890796