72170404 has 12 divisors (see below), whose sum is σ = 126403200. Its totient is φ = 36055208.

The previous prime is 72170353. The next prime is 72170431. The reversal of 72170404 is 40407127.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1564 + ... + 12115.

It is an arithmetic number, because the mean of its divisors is an integer number (10533600).

Almost surely, 2^72170404 is an apocalyptic number.

It is an amenable number.

72170404 is a deficient number, since it is larger than the sum of its proper divisors (54232796).

72170404 is a wasteful number, since it uses less digits than its factorization.

72170404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15002 (or 15000 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 72170404 is about 8495.3165920994. The cubic root of 72170404 is about 416.3447047391.

The spelling of 72170404 in words is "seventy-two million, one hundred seventy thousand, four hundred four".