72257984 has 28 divisors (see below), whose sum is σ = 143676624. Its totient is φ = 36056064.

The previous prime is 72257981. The next prime is 72257989. The reversal of 72257984 is 48975227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72257981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45752 + ... + 47304.

It is an arithmetic number, because the mean of its divisors is an integer number (5131308).

Almost surely, 2^72257984 is an apocalyptic number.

It is an amenable number.

72257984 is a deficient number, since it is larger than the sum of its proper divisors (71418640).

72257984 is a wasteful number, since it uses less digits than its factorization.

72257984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292 (or 2282 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 72257984 is about 8500.4696340849. The cubic root of 72257984 is about 416.5130504297.

The spelling of 72257984 in words is "seventy-two million, two hundred fifty-seven thousand, nine hundred eighty-four".