12890878 has 64 divisors (see below), whose sum is σ = 26707968. Its totient is φ = 4504320.

The previous prime is 12890869. The next prime is 12890887. The reversal of 12890878 is 87809821.

It is an interprime number because it is at equal distance from previous prime (12890869) and next prime (12890887).

It is a super-2 number, since 2×12890878² = 332349471221768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94026 + ... + 94162.

It is an arithmetic number, because the mean of its divisors is an integer number (417312).

Almost surely, 2^12890878 is an apocalyptic number.

12890878 is an abundant number, since it is smaller than the sum of its proper divisors (13817090).

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

12890878 is a wasteful number, since it uses less digits than its factorization.

12890878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 12890878 is about 3590.3868872310. The cubic root of 12890878 is about 234.4737158799.

The spelling of 12890878 in words is "twelve million, eight hundred ninety thousand, eight hundred seventy-eight".