72319858 has 16 divisors (see below), whose sum is σ = 117444096. Its totient is φ = 33201360.

The previous prime is 72319829. The next prime is 72319861. The reversal of 72319858 is 85891327.

It is a super-2 number, since 2×72319858² = 10460323722280328, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2316 + ... + 12247.

It is an arithmetic number, because the mean of its divisors is an integer number (7340256).

Almost surely, 2^72319858 is an apocalyptic number.

72319858 is a deficient number, since it is larger than the sum of its proper divisors (45124238).

72319858 is a wasteful number, since it uses less digits than its factorization.

72319858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14769.

The product of its digits is 120960, while the sum is 43.

The square root of 72319858 is about 8504.1083012859. The cubic root of 72319858 is about 416.6319022373.

The spelling of 72319858 in words is "seventy-two million, three hundred nineteen thousand, eight hundred fifty-eight".