72470492 has 18 divisors (see below), whose sum is σ = 128493288. Its totient is φ = 35764248.

The previous prime is 72470479. The next prime is 72470509. The reversal of 72470492 is 29407427.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23513 + ... + 26415.

It is an arithmetic number, because the mean of its divisors is an integer number (7138516).

Almost surely, 2^72470492 is an apocalyptic number.

It is an amenable number.

72470492 is a deficient number, since it is larger than the sum of its proper divisors (56022796).

72470492 is a wasteful number, since it uses less digits than its factorization.

72470492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 72470492 is about 8512.9602371913. The cubic root of 72470492 is about 416.9209671812.

The spelling of 72470492 in words is "seventy-two million, four hundred seventy thousand, four hundred ninety-two".