12870920 has 32 divisors (see below), whose sum is σ = 29104920. Its totient is φ = 5122560.

The previous prime is 12870919. The next prime is 12870941. The reversal of 12870920 is 2907821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8213956 + 4656964 = 2866^2 + 2158^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8630 + ... + 10010.

Almost surely, 2^12870920 is an apocalyptic number.

12870920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12870920 is an abundant number, since it is smaller than the sum of its proper divisors (16234000).

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

12870920 is a wasteful number, since it uses less digits than its factorization.

12870920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 12870920 is about 3587.6064444139. The cubic root of 12870920 is about 234.3526472312.

The spelling of 12870920 in words is "twelve million, eight hundred seventy thousand, nine hundred twenty".