12515970 has 32 divisors (see below), whose sum is σ = 30424320. Its totient is φ = 3294720.

The previous prime is 12515963. The next prime is 12515999. The reversal of 12515970 is 7951521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271 + ... + 5010.

It is an arithmetic number, because the mean of its divisors is an integer number (950760).

Almost surely, 2^12515970 is an apocalyptic number.

12515970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12515970 is an abundant number, since it is smaller than the sum of its proper divisors (17908350).

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

12515970 is a wasteful number, since it uses less digits than its factorization.

12515970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5370.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 12515970 is about 3537.7916840877. The cubic root of 12515970 is about 232.1782345182.

The spelling of 12515970 in words is "twelve million, five hundred fifteen thousand, nine hundred seventy".