215928315 has 16 divisors (see below), whose sum is σ = 383872800. Its totient is φ = 115161696.

The previous prime is 215928289. The next prime is 215928341. The reversal of 215928315 is 513829512.

It is an interprime number because it is at equal distance from previous prime (215928289) and next prime (215928341).

It is not a de Polignac number, because 215928315 - 2¹⁷ = 215797243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215928315.

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, 799600 + ... + 799869.

It is an arithmetic number, because the mean of its divisors is an integer number (23992050).

Almost surely, 2^215928315 is an apocalyptic number.

215928315 is a deficient number, since it is larger than the sum of its proper divisors (167944485).

215928315 is a wasteful number, since it uses less digits than its factorization.

215928315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599483 (or 1599477 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 215928315 is about 14694.4994810984. The cubic root of 215928315 is about 599.9336176559.

The spelling of 215928315 in words is "two hundred fifteen million, nine hundred twenty-eight thousand, three hundred fifteen".