72831517224 has 16 divisors (see below), whose sum is σ = 182078793120. Its totient is φ = 24277172400.

The previous prime is 72831517189. The next prime is 72831517243. The reversal of 72831517224 is 42271513827.

It is a happy number.

It is a super-2 number, since 2×72831517224² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 1517323252 + ... + 1517323299.

It is an arithmetic number, because the mean of its divisors is an integer number (11379924570).

Almost surely, 2^72831517224 is an apocalyptic number.

It is an amenable number.

72831517224 is an abundant number, since it is smaller than the sum of its proper divisors (109247275896).

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

72831517224 is a wasteful number, since it uses less digits than its factorization.

72831517224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034646560 (or 3034646556 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The spelling of 72831517224 in words is "seventy-two billion, eight hundred thirty-one million, five hundred seventeen thousand, two hundred twenty-four".