12857958 has 24 divisors (see below), whose sum is σ = 28254096. Its totient is φ = 4225200.

The previous prime is 12857953. The next prime is 12857983. The reversal of 12857958 is 85975821.

It is a happy number.

12857958 is a `hidden beast` number, since 1 + 28 + 579 + 58 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3753 + ... + 6308.

It is an arithmetic number, because the mean of its divisors is an integer number (1177254).

Almost surely, 2^12857958 is an apocalyptic number.

12857958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12857958 is an abundant number, since it is smaller than the sum of its proper divisors (15396138).

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

12857958 is a wasteful number, since it uses less digits than its factorization.

12857958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140 (or 10137 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 12857958 is about 3585.7994924424. The cubic root of 12857958 is about 234.2739504660.

The spelling of 12857958 in words is "twelve million, eight hundred fifty-seven thousand, nine hundred fifty-eight".