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12658868 = 2212132609
BaseRepresentation
bin110000010010…
…100010110100
3212211010200222
4300102202310
511220040433
61131153512
7212412215
oct60224264
925733628
1012658868
117166882
1242a5898
132812b71
14197740c
1511a0b98
hexc128b4

12658868 has 12 divisors (see below), whose sum is σ = 22179780. Its totient is φ = 6321792.

The previous prime is 12658861. The next prime is 12658879. The reversal of 12658868 is 86885621.

It can be written as a sum of positive squares in 2 ways, for example, as 2748964 + 9909904 = 1658^2 + 3148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12658861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3548 + ... + 6156.

It is an arithmetic number, because the mean of its divisors is an integer number (1848315).

Almost surely, 212658868 is an apocalyptic number.

It is an amenable number.

12658868 is a deficient number, since it is larger than the sum of its proper divisors (9520912).

12658868 is a wasteful number, since it uses less digits than its factorization.

12658868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826 (or 3824 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 12658868 is about 3557.9302972374. The cubic root of 12658868 is about 233.0585054505.

The spelling of 12658868 in words is "twelve million, six hundred fifty-eight thousand, eight hundred sixty-eight".

Divisors: 1 2 4 1213 2426 2609 4852 5218 10436 3164717 6329434 12658868