72401344 has 14 divisors (see below), whose sum is σ = 143671544. Its totient is φ = 36200640.

The previous prime is 72401333. The next prime is 72401363. The reversal of 72401344 is 44310427.

It is a super-2 number, since 2×72401344² = 10483909226012672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565572 + ... + 565699.

Almost surely, 2^72401344 is an apocalyptic number.

It is an amenable number.

72401344 is a deficient number, since it is larger than the sum of its proper divisors (71270200).

72401344 is a wasteful number, since it uses less digits than its factorization.

72401344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131283 (or 1131273 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 72401344 is about 8508.8979309897. The cubic root of 72401344 is about 416.7883227338.

The spelling of 72401344 in words is "seventy-two million, four hundred one thousand, three hundred forty-four".