72735856 has 20 divisors (see below), whose sum is σ = 141669504. Its totient is φ = 36176000.

The previous prime is 72735823. The next prime is 72735863. The reversal of 72735856 is 65853727.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8845 + ... + 14956.

Almost surely, 2^72735856 is an apocalyptic number.

It is an amenable number.

72735856 is a deficient number, since it is larger than the sum of its proper divisors (68933648).

72735856 is a wasteful number, since it uses less digits than its factorization.

72735856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24000 (or 23994 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The square root of 72735856 is about 8528.5318783481. The cubic root of 72735856 is about 417.4292248584.

The spelling of 72735856 in words is "seventy-two million, seven hundred thirty-five thousand, eight hundred fifty-six".