12915620 has 24 divisors (see below), whose sum is σ = 27218688. Its totient is φ = 5148000.

The previous prime is 12915593. The next prime is 12915653. The reversal of 12915620 is 2651921.

It is a self number, because there is not a number n which added to its sum of digits gives 12915620.

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, 5645 + ... + 7595.

It is an arithmetic number, because the mean of its divisors is an integer number (1134112).

Almost surely, 2^12915620 is an apocalyptic number.

12915620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12915620 is an abundant number, since it is smaller than the sum of its proper divisors (14303068).

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

12915620 is a wasteful number, since it uses less digits than its factorization.

12915620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291 (or 2289 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12915620 is about 3593.8308251781. The cubic root of 12915620 is about 234.6236317362.

The spelling of 12915620 in words is "twelve million, nine hundred fifteen thousand, six hundred twenty".