215253132 has 24 divisors (see below), whose sum is σ = 504118272. Its totient is φ = 71485200.

The previous prime is 215253121. The next prime is 215253149. The reversal of 215253132 is 231352512.

It is a happy number.

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, 29844 + ... + 36347.

It is an arithmetic number, because the mean of its divisors is an integer number (21004928).

Almost surely, 2^215253132 is an apocalyptic number.

It is an amenable number.

215253132 is an abundant number, since it is smaller than the sum of its proper divisors (288865140).

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

215253132 is a wasteful number, since it uses less digits than its factorization.

215253132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66469 (or 66467 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 215253132 is about 14671.5074890074. The cubic root of 215253132 is about 599.3076569647.

The spelling of 215253132 in words is "two hundred fifteen million, two hundred fifty-three thousand, one hundred thirty-two".