215770272 has 48 divisors (see below), whose sum is σ = 569913120. Its totient is φ = 71476992.

The previous prime is 215770267. The next prime is 215770309. The reversal of 215770272 is 272077512.

It is a tau number, because it is divible by the number of its divisors (48).

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, 8754 + ... + 22542.

It is an arithmetic number, because the mean of its divisors is an integer number (11873190).

Almost surely, 2^215770272 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 215770272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284956560).

215770272 is an abundant number, since it is smaller than the sum of its proper divisors (354142848).

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

215770272 is a wasteful number, since it uses less digits than its factorization.

215770272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13965 (or 13957 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 215770272 is about 14689.1208722646. The cubic root of 215770272 is about 599.7872134343.

The spelling of 215770272 in words is "two hundred fifteen million, seven hundred seventy thousand, two hundred seventy-two".