215465264 has 20 divisors (see below), whose sum is σ = 477101904. Its totient is φ = 92342208.

The previous prime is 215465231. The next prime is 215465269. The reversal of 215465264 is 462564512.

It is not an unprimeable number, because it can be changed into a prime (215465269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961787 + ... + 962010.

Almost surely, 2^215465264 is an apocalyptic number.

It is an amenable number.

215465264 is an abundant number, since it is smaller than the sum of its proper divisors (261636640).

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

215465264 is a wasteful number, since it uses less digits than its factorization.

215465264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923812 (or 1923806 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 215465264 is about 14678.7350953684. The cubic root of 215465264 is about 599.5044649284.

The spelling of 215465264 in words is "two hundred fifteen million, four hundred sixty-five thousand, two hundred sixty-four".