12946857 has 32 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 6556800.

The previous prime is 12946841. The next prime is 12946859. The reversal of 12946857 is 75864921.

12946857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12946857 - 2⁴ = 12946841 is a prime.

It is a super-2 number, since 2×12946857² = 335242212356898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12946859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8788 + ... + 10154.

It is an arithmetic number, because the mean of its divisors is an integer number (689472).

Almost surely, 2^12946857 is an apocalyptic number.

It is an amenable number.

12946857 is a deficient number, since it is larger than the sum of its proper divisors (9116247).

12946857 is a wasteful number, since it uses less digits than its factorization.

12946857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429.

The product of its digits is 120960, while the sum is 42.

The square root of 12946857 is about 3598.1741203005. The cubic root of 12946857 is about 234.8126286732.

The spelling of 12946857 in words is "twelve million, nine hundred forty-six thousand, eight hundred fifty-seven".