72433656 has 32 divisors (see below), whose sum is σ = 201205200. Its totient is φ = 24144480.

The previous prime is 72433637. The next prime is 72433663. The reversal of 72433656 is 65633427.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 72433656.

It is a congruent number.

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, 167455 + ... + 167886.

Almost surely, 2^72433656 is an apocalyptic number.

It is an amenable number.

72433656 is an abundant number, since it is smaller than the sum of its proper divisors (128771544).

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

72433656 is a wasteful number, since it uses less digits than its factorization.

72433656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335356 (or 335346 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 72433656 is about 8510.7964374669. The cubic root of 72433656 is about 416.8503163406.

The spelling of 72433656 in words is "seventy-two million, four hundred thirty-three thousand, six hundred fifty-six".