12857994 has 32 divisors (see below), whose sum is σ = 29498880. Its totient is φ = 4147200.

The previous prime is 12857983. The next prime is 12858017. The reversal of 12857994 is 49975821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2167 + ... + 5514.

It is an arithmetic number, because the mean of its divisors is an integer number (921840).

Almost surely, 2^12857994 is an apocalyptic number.

12857994 is an abundant number, since it is smaller than the sum of its proper divisors (16640886).

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

12857994 is a wasteful number, since it uses less digits than its factorization.

12857994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7723 (or 7717 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 12857994 is about 3585.8045122399. The cubic root of 12857994 is about 234.2741691076.

The spelling of 12857994 in words is "twelve million, eight hundred fifty-seven thousand, nine hundred ninety-four".