15798915 has 32 divisors (see below), whose sum is σ = 30643200. Its totient is φ = 7659360.

The previous prime is 15798883. The next prime is 15798919. The reversal of 15798915 is 51989751.

It is not a de Polignac number, because 15798915 - 2⁵ = 15798883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (15798919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3835 + ... + 6804.

It is an arithmetic number, because the mean of its divisors is an integer number (957600).

Almost surely, 2^15798915 is an apocalyptic number.

15798915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15798915 is a deficient number, since it is larger than the sum of its proper divisors (14844285).

15798915 is a wasteful number, since it uses less digits than its factorization.

15798915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10664 (or 10658 counting only the distinct ones).

The product of its digits is 113400, while the sum is 45.

The square root of 15798915 is about 3974.7848998405. The cubic root of 15798915 is about 250.9241264190.

The spelling of 15798915 in words is "fifteen million, seven hundred ninety-eight thousand, nine hundred fifteen".