72154384 has 20 divisors (see below), whose sum is σ = 141159616. Its totient is φ = 35726112.

The previous prime is 72154367. The next prime is 72154393. The reversal of 72154384 is 48345127.

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, 20244 + ... + 23539.

Almost surely, 2^72154384 is an apocalyptic number.

It is an amenable number.

72154384 is a deficient number, since it is larger than the sum of its proper divisors (69005232).

72154384 is a wasteful number, since it uses less digits than its factorization.

72154384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43894 (or 43888 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 72154384 is about 8494.3736673165. The cubic root of 72154384 is about 416.3138964697.

The spelling of 72154384 in words is "seventy-two million, one hundred fifty-four thousand, three hundred eighty-four".