72404426 has 16 divisors (see below), whose sum is σ = 109771200. Its totient is φ = 35816448.

The previous prime is 72404407. The next prime is 72404447. The reversal of 72404426 is 62440427.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93770 + ... + 94538.

It is an arithmetic number, because the mean of its divisors is an integer number (6860700).

Almost surely, 2^72404426 is an apocalyptic number.

72404426 is a deficient number, since it is larger than the sum of its proper divisors (37366774).

72404426 is a wasteful number, since it uses less digits than its factorization.

72404426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 72404426 is about 8509.0790335970. The cubic root of 72404426 is about 416.7942366360.

The spelling of 72404426 in words is "seventy-two million, four hundred four thousand, four hundred twenty-six".