12990915 has 64 divisors (see below), whose sum is σ = 26956800. Its totient is φ = 5812992.

The previous prime is 12990899. The next prime is 12990949. The reversal of 12990915 is 51909921.

12990915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12990915 - 2⁴ = 12990899 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12990915.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55639 + ... + 55871.

It is an arithmetic number, because the mean of its divisors is an integer number (421200).

Almost surely, 2^12990915 is an apocalyptic number.

12990915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12990915 is an abundant number, since it is smaller than the sum of its proper divisors (13965885).

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

12990915 is a wasteful number, since it uses less digits than its factorization.

12990915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 12990915 is about 3604.2911924538. The cubic root of 12990915 is about 235.0786819675.

The spelling of 12990915 in words is "twelve million, nine hundred ninety thousand, nine hundred fifteen".