72754224 has 20 divisors (see below), whose sum is σ = 187948536. Its totient is φ = 24251392.

The previous prime is 72754223. The next prime is 72754289. The reversal of 72754224 is 42245727.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72754223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757809 + ... + 757904.

Almost surely, 2^72754224 is an apocalyptic number.

It is an amenable number.

72754224 is an abundant number, since it is smaller than the sum of its proper divisors (115194312).

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

72754224 is a wasteful number, since it uses less digits than its factorization.

72754224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515724 (or 1515718 counting only the distinct ones).

The product of its digits is 31360, while the sum is 33.

The square root of 72754224 is about 8529.6086662871. The cubic root of 72754224 is about 417.4643597291.

The spelling of 72754224 in words is "seventy-two million, seven hundred fifty-four thousand, two hundred twenty-four".