215367972 has 24 divisors (see below), whose sum is σ = 516108096. Its totient is φ = 69848928.

The previous prime is 215367931. The next prime is 215367989. The reversal of 215367972 is 279763512.

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 7 ways as a sum of consecutive naturals, for example, 242088 + ... + 242975.

It is an arithmetic number, because the mean of its divisors is an integer number (21504504).

Almost surely, 2^215367972 is an apocalyptic number.

It is an amenable number.

215367972 is an abundant number, since it is smaller than the sum of its proper divisors (300740124).

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

215367972 is a wasteful number, since it uses less digits than its factorization.

215367972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485107 (or 485105 counting only the distinct ones).

The product of its digits is 158760, while the sum is 42.

The square root of 215367972 is about 14675.4206754014. The cubic root of 215367972 is about 599.4142171725.

It can be divided in two parts, 2153 and 67972, that added together give a triangular number (70125 = T₃₇₄).

The spelling of 215367972 in words is "two hundred fifteen million, three hundred sixty-seven thousand, nine hundred seventy-two".