12912867 has 48 divisors (see below), whose sum is σ = 21835008. Its totient is φ = 7275840.

The previous prime is 12912863. The next prime is 12912883. The reversal of 12912867 is 76821921.

It is not a de Polignac number, because 12912867 - 2² = 12912863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12912863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120628 + ... + 120734.

It is an arithmetic number, because the mean of its divisors is an integer number (454896).

Almost surely, 2^12912867 is an apocalyptic number.

12912867 is a deficient number, since it is larger than the sum of its proper divisors (8922141).

12912867 is a wasteful number, since it uses less digits than its factorization.

12912867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 197 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12912867 is about 3593.4477872929. The cubic root of 12912867 is about 234.6069603271.

It can be divided in two parts, 129 and 12867, that added together give a square (12996 = 114²).

The spelling of 12912867 in words is "twelve million, nine hundred twelve thousand, eight hundred sixty-seven".