72219824 has 40 divisors (see below), whose sum is σ = 144151488. Its totient is φ = 35033600.

The previous prime is 72219821. The next prime is 72219857. The reversal of 72219824 is 42891227.

It is not an unprimeable number, because it can be changed into a prime (72219821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102674 + ... + 103374.

Almost surely, 2^72219824 is an apocalyptic number.

It is an amenable number.

72219824 is a deficient number, since it is larger than the sum of its proper divisors (71931664).

72219824 is a wasteful number, since it uses less digits than its factorization.

72219824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 887 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 72219824 is about 8498.2247557946. The cubic root of 72219824 is about 416.4397162647.

The spelling of 72219824 in words is "seventy-two million, two hundred nineteen thousand, eight hundred twenty-four".