215604272 has 40 divisors (see below), whose sum is σ = 455595840. Its totient is φ = 98242560.

The previous prime is 215604269. The next prime is 215604313. The reversal of 215604272 is 272406512.

It is a happy number.

215604272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9872 + ... + 22992.

It is an arithmetic number, because the mean of its divisors is an integer number (11389896).

Almost surely, 2^215604272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215604272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227797920).

215604272 is an abundant number, since it is smaller than the sum of its proper divisors (239991568).

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

215604272 is a wasteful number, since it uses less digits than its factorization.

215604272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13221 (or 13215 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 215604272 is about 14683.4693448109. The cubic root of 215604272 is about 599.6333611908.

The spelling of 215604272 in words is "two hundred fifteen million, six hundred four thousand, two hundred seventy-two".