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12893868 = 22321327551
BaseRepresentation
bin110001001011…
…111010101100
3220021002001200
4301023322230
511300100433
61140205500
7214411311
oct61137254
926232050
1012893868
117307399
124399890
132895b10
1419d8d08
1511ea613
hexc4beac

12893868 has 36 divisors (see below), whose sum is σ = 35101248. Its totient is φ = 3967200.

The previous prime is 12893857. The next prime is 12893873. The reversal of 12893868 is 86839821.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13308 + ... + 14243.

Almost surely, 212893868 is an apocalyptic number.

12893868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12893868 is an abundant number, since it is smaller than the sum of its proper divisors (22207380).

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

12893868 is a wasteful number, since it uses less digits than its factorization.

12893868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27574 (or 27569 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 12893868 is about 3590.8032527556. The cubic root of 12893868 is about 234.4918429673.

The spelling of 12893868 in words is "twelve million, eight hundred ninety-three thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 117 156 234 468 27551 55102 82653 110204 165306 247959 330612 358163 495918 716326 991836 1074489 1432652 2148978 3223467 4297956 6446934 12893868