215255152 has 20 divisors (see below), whose sum is σ = 476636656. Its totient is φ = 92252160.

The previous prime is 215255149. The next prime is 215255179. The reversal of 215255152 is 251552512.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 215255152.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960849 + ... + 961072.

Almost surely, 2^215255152 is an apocalyptic number.

It is an amenable number.

215255152 is an abundant number, since it is smaller than the sum of its proper divisors (261381504).

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

215255152 is a wasteful number, since it uses less digits than its factorization.

215255152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921936 (or 1921930 counting only the distinct ones).

The product of its digits is 5000, while the sum is 28.

The square root of 215255152 is about 14671.5763297609. The cubic root of 215255152 is about 599.3095316532.

The spelling of 215255152 in words is "two hundred fifteen million, two hundred fifty-five thousand, one hundred fifty-two".