215832972 has 18 divisors (see below), whose sum is σ = 503729044. Its totient is φ = 71927360.

The previous prime is 215832961. The next prime is 215833001. The reversal of 215832972 is 279238512.

It is a self number, because there is not a number n which added to its sum of digits gives 215832972.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48772 + ... + 53012.

Almost surely, 2^215832972 is an apocalyptic number.

It is an amenable number.

215832972 is an abundant number, since it is smaller than the sum of its proper divisors (287896072).

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

215832972 is an frugal number, since it uses more digits than its factorization.

215832972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489 (or 4246 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 215832972 is about 14691.2549497992. The cubic root of 215832972 is about 599.8453045634.

The spelling of 215832972 in words is "two hundred fifteen million, eight hundred thirty-two thousand, nine hundred seventy-two".