72170804 has 12 divisors (see below), whose sum is σ = 126486528. Its totient is φ = 36031800.

The previous prime is 72170801. The next prime is 72170807. The reversal of 72170804 is 40807127.

It is an interprime number because it is at equal distance from previous prime (72170801) and next prime (72170807).

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72170801) by changing a digit.

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, 10292 + ... + 15819.

It is an arithmetic number, because the mean of its divisors is an integer number (10540544).

Almost surely, 2^72170804 is an apocalyptic number.

It is an amenable number.

72170804 is a deficient number, since it is larger than the sum of its proper divisors (54315724).

72170804 is a wasteful number, since it uses less digits than its factorization.

72170804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26806 (or 26804 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 72170804 is about 8495.3401344502. The cubic root of 72170804 is about 416.3454739259.

The spelling of 72170804 in words is "seventy-two million, one hundred seventy thousand, eight hundred four".