215364868 has 24 divisors (see below), whose sum is σ = 388704960. Its totient is φ = 104358240.

The previous prime is 215364839. The next prime is 215364869. The reversal of 215364868 is 868463512.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (215364869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10330 + ... + 23182.

It is an arithmetic number, because the mean of its divisors is an integer number (16196040).

Almost surely, 2^215364868 is an apocalyptic number.

It is an amenable number.

215364868 is a deficient number, since it is larger than the sum of its proper divisors (173340092).

215364868 is a wasteful number, since it uses less digits than its factorization.

215364868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12987 (or 12985 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 215364868 is about 14675.3149199600. The cubic root of 215364868 is about 599.4113374644.

The spelling of 215364868 in words is "two hundred fifteen million, three hundred sixty-four thousand, eight hundred sixty-eight".