72195870 has 16 divisors (see below), whose sum is σ = 173270160. Its totient is φ = 19252224.

The previous prime is 72195859. The next prime is 72195887. The reversal of 72195870 is 7859127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1203235 + ... + 1203294.

It is an arithmetic number, because the mean of its divisors is an integer number (10829385).

Almost surely, 2^72195870 is an apocalyptic number.

72195870 is an abundant number, since it is smaller than the sum of its proper divisors (101074290).

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

72195870 is a wasteful number, since it uses less digits than its factorization.

72195870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406539.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 72195870 is about 8496.8152857409. The cubic root of 72195870 is about 416.3936693508.

The spelling of 72195870 in words is "seventy-two million, one hundred ninety-five thousand, eight hundred seventy".