72655434 has 16 divisors (see below), whose sum is σ = 161456640. Its totient is φ = 24218460.

The previous prime is 72655397. The next prime is 72655441. The reversal of 72655434 is 43455627.

72655434 is a `hidden beast` number, since 72 + 6 + 554 + 34 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 672682 + ... + 672789.

It is an arithmetic number, because the mean of its divisors is an integer number (10091040).

Almost surely, 2^72655434 is an apocalyptic number.

72655434 is an abundant number, since it is smaller than the sum of its proper divisors (88801206).

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

72655434 is a wasteful number, since it uses less digits than its factorization.

72655434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345482 (or 1345476 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 72655434 is about 8523.8156948634. The cubic root of 72655434 is about 417.2753215191.

The spelling of 72655434 in words is "seventy-two million, six hundred fifty-five thousand, four hundred thirty-four".