72212392 has 32 divisors (see below), whose sum is σ = 159736320. Its totient is φ = 29949120.

The previous prime is 72212389. The next prime is 72212411. The reversal of 72212392 is 29321227.

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 72212392.

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, 19063 + ... + 22534.

It is an arithmetic number, because the mean of its divisors is an integer number (4991760).

Almost surely, 2^72212392 is an apocalyptic number.

It is an amenable number.

72212392 is an abundant number, since it is smaller than the sum of its proper divisors (87523928).

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

72212392 is a wasteful number, since it uses less digits than its factorization.

72212392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41641 (or 41637 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 72212392 is about 8497.7874767495. The cubic root of 72212392 is about 416.4254307773.

The spelling of 72212392 in words is "seventy-two million, two hundred twelve thousand, three hundred ninety-two".