72571768 has 8 divisors (see below), whose sum is σ = 136072080. Its totient is φ = 36285880.

The previous prime is 72571753. The next prime is 72571771. The reversal of 72571768 is 86717527.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4535728 + ... + 4535743.

It is an arithmetic number, because the mean of its divisors is an integer number (17009010).

Almost surely, 2^72571768 is an apocalyptic number.

It is an amenable number.

72571768 is a deficient number, since it is larger than the sum of its proper divisors (63500312).

72571768 is a wasteful number, since it uses less digits than its factorization.

72571768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9071477 (or 9071473 counting only the distinct ones).

The product of its digits is 164640, while the sum is 43.

The square root of 72571768 is about 8518.9065025976. The cubic root of 72571768 is about 417.1150895652.

It can be divided in two parts, 7257 and 1768, that added together give a square (9025 = 95²).

The spelling of 72571768 in words is "seventy-two million, five hundred seventy-one thousand, seven hundred sixty-eight".