215147952 has 120 divisors (see below), whose sum is σ = 623960064. Its totient is φ = 69163392.

The previous prime is 215147941. The next prime is 215147969. The reversal of 215147952 is 259741512.

215147952 is a `hidden beast` number, since 21 + 514 + 79 + 52 = 666.

215147952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 561553 + ... + 561935.

Almost surely, 2^215147952 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 215147952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311980032).

215147952 is an abundant number, since it is smaller than the sum of its proper divisors (408812112).

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

215147952 is a wasteful number, since it uses less digits than its factorization.

215147952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 518 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 215147952 is about 14667.9225522908. The cubic root of 215147952 is about 599.2100270276.

The spelling of 215147952 in words is "two hundred fifteen million, one hundred forty-seven thousand, nine hundred fifty-two".