72221592 has 16 divisors (see below), whose sum is σ = 180554040. Its totient is φ = 24073856.

The previous prime is 72221561. The next prime is 72221647. The reversal of 72221592 is 29512227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504593 + ... + 1504640.

Almost surely, 2^72221592 is an apocalyptic number.

It is an amenable number.

72221592 is an abundant number, since it is smaller than the sum of its proper divisors (108332448).

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

72221592 is a wasteful number, since it uses less digits than its factorization.

72221592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009242 (or 3009238 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 72221592 is about 8498.3287768831. The cubic root of 72221592 is about 416.4431144979.

The spelling of 72221592 in words is "seventy-two million, two hundred twenty-one thousand, five hundred ninety-two".