72745776 has 50 divisors (see below), whose sum is σ = 210551132. Its totient is φ = 24248160.

The previous prime is 72745721. The next prime is 72745781. The reversal of 72745776 is 67754727.

72745776 is a `hidden beast` number, since 7 + 2 + 74 + 577 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26770 + ... + 29361.

Almost surely, 2^72745776 is an apocalyptic number.

It is an amenable number.

72745776 is an abundant number, since it is smaller than the sum of its proper divisors (137805356).

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

72745776 is a wasteful number, since it uses less digits than its factorization.

72745776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56151 (or 56136 counting only the distinct ones).

The product of its digits is 576240, while the sum is 45.

The square root of 72745776 is about 8529.1134357564. The cubic root of 72745776 is about 417.4482008715.

The spelling of 72745776 in words is "seventy-two million, seven hundred forty-five thousand, seven hundred seventy-six".