72417164 has 12 divisors (see below), whose sum is σ = 128154600. Its totient is φ = 35801568.

The previous prime is 72417143. The next prime is 72417181. The reversal of 72417164 is 46171427.

It is a self number, because there is not a number n which added to its sum of digits gives 72417164.

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, 101354 + ... + 102065.

It is an arithmetic number, because the mean of its divisors is an integer number (10679550).

Almost surely, 2^72417164 is an apocalyptic number.

It is an amenable number.

72417164 is a deficient number, since it is larger than the sum of its proper divisors (55737436).

72417164 is a wasteful number, since it uses less digits than its factorization.

72417164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203512 (or 203510 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 72417164 is about 8509.8274953139. The cubic root of 72417164 is about 416.8186771938.

The spelling of 72417164 in words is "seventy-two million, four hundred seventeen thousand, one hundred sixty-four".