72135744 has 28 divisors (see below), whose sum is σ = 190859664. Its totient is φ = 24045184.

The previous prime is 72135737. The next prime is 72135757. The reversal of 72135744 is 44753127.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187662 + ... + 188045.

Almost surely, 2^72135744 is an apocalyptic number.

It is an amenable number.

72135744 is an abundant number, since it is smaller than the sum of its proper divisors (118723920).

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

72135744 is a wasteful number, since it uses less digits than its factorization.

72135744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375722 (or 375712 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 72135744 is about 8493.2763995999. The cubic root of 72135744 is about 416.2780439041.

The spelling of 72135744 in words is "seventy-two million, one hundred thirty-five thousand, seven hundred forty-four".