215450364 has 12 divisors (see below), whose sum is σ = 502717544. Its totient is φ = 71816784.

The previous prime is 215450363. The next prime is 215450377. The reversal of 215450364 is 463054512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215450363) 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, 8977087 + ... + 8977110.

Almost surely, 2^215450364 is an apocalyptic number.

It is an amenable number.

215450364 is an abundant number, since it is smaller than the sum of its proper divisors (287267180).

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

215450364 is a wasteful number, since it uses less digits than its factorization.

215450364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17954204 (or 17954202 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 215450364 is about 14678.2275496737. The cubic root of 215450364 is about 599.4906454968.

The spelling of 215450364 in words is "two hundred fifteen million, four hundred fifty thousand, three hundred sixty-four".