72135794 has 16 divisors (see below), whose sum is σ = 116450136. Its totient is φ = 33388800.

The previous prime is 72135781. The next prime is 72135827. The reversal of 72135794 is 49753127.

It can be written as a sum of positive squares in 4 ways, for example, as 47265625 + 24870169 = 6875^2 + 4987^2 .

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, 15317 + ... + 19464.

Almost surely, 2^72135794 is an apocalyptic number.

72135794 is a deficient number, since it is larger than the sum of its proper divisors (44314342).

72135794 is a wasteful number, since it uses less digits than its factorization.

72135794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34861.

The product of its digits is 52920, while the sum is 38.

The square root of 72135794 is about 8493.2793431042. The cubic root of 72135794 is about 416.2781400834.

The spelling of 72135794 in words is "seventy-two million, one hundred thirty-five thousand, seven hundred ninety-four".