72756056 has 16 divisors (see below), whose sum is σ = 144442440. Its totient is φ = 34238080.

The previous prime is 72756053. The next prime is 72756091. The reversal of 72756056 is 65065727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72756053) 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, 267350 + ... + 267621.

Almost surely, 2^72756056 is an apocalyptic number.

It is an amenable number.

72756056 is a deficient number, since it is larger than the sum of its proper divisors (71686384).

72756056 is a wasteful number, since it uses less digits than its factorization.

72756056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534994 (or 534990 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 72756056 is about 8529.7160562354. The cubic root of 72756056 is about 417.4678637102.

It can be divided in two parts, 7275 and 6056, that added together give a palindrome (13331).

The spelling of 72756056 in words is "seventy-two million, seven hundred fifty-six thousand, fifty-six".