72404244 has 36 divisors (see below), whose sum is σ = 199661280. Its totient is φ = 21940560.

The previous prime is 72404179. The next prime is 72404257. The reversal of 72404244 is 44240427.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91024 + ... + 91815.

Almost surely, 2^72404244 is an apocalyptic number.

It is an amenable number.

72404244 is an abundant number, since it is smaller than the sum of its proper divisors (127257036).

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

72404244 is a wasteful number, since it uses less digits than its factorization.

72404244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182860 (or 182855 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 72404244 is about 8509.0683391309. The cubic root of 72404244 is about 416.7938874095.

The spelling of 72404244 in words is "seventy-two million, four hundred four thousand, two hundred forty-four".