72784252 has 12 divisors (see below), whose sum is σ = 127759576. Its totient is φ = 36281520.

The previous prime is 72784237. The next prime is 72784273. The reversal of 72784252 is 25248727.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 26163 + ... + 28810.

Almost surely, 2^72784252 is an apocalyptic number.

It is an amenable number.

72784252 is a deficient number, since it is larger than the sum of its proper divisors (54975324).

72784252 is a wasteful number, since it uses less digits than its factorization.

72784252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55308 (or 55306 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 72784252 is about 8531.3687061339. The cubic root of 72784252 is about 417.5217854696.

The spelling of 72784252 in words is "seventy-two million, seven hundred eighty-four thousand, two hundred fifty-two".