72283272 has 16 divisors (see below), whose sum is σ = 180708240. Its totient is φ = 24094416.

The previous prime is 72283261. The next prime is 72283313. The reversal of 72283272 is 27238227.

It is a super-2 number, since 2×72283272² = 10449742822051968, which contains 22 as substring.

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, 1505878 + ... + 1505925.

It is an arithmetic number, because the mean of its divisors is an integer number (11294265).

Almost surely, 2^72283272 is an apocalyptic number.

It is an amenable number.

72283272 is an abundant number, since it is smaller than the sum of its proper divisors (108424968).

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

72283272 is a wasteful number, since it uses less digits than its factorization.

72283272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011812 (or 3011808 counting only the distinct ones).

The product of its digits is 18816, while the sum is 33.

The square root of 72283272 is about 8501.9569511966. The cubic root of 72283272 is about 416.5616335433.

The spelling of 72283272 in words is "seventy-two million, two hundred eighty-three thousand, two hundred seventy-two".