72904494 has 16 divisors (see below), whose sum is σ = 157025232. Its totient is φ = 22432128.

The previous prime is 72904459. The next prime is 72904523. The reversal of 72904494 is 49440927.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 467259 + ... + 467414.

It is an arithmetic number, because the mean of its divisors is an integer number (9814077).

Almost surely, 2^72904494 is an apocalyptic number.

72904494 is an abundant number, since it is smaller than the sum of its proper divisors (84120738).

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

72904494 is a wasteful number, since it uses less digits than its factorization.

72904494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934691.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 72904494 is about 8538.4128501730. The cubic root of 72904494 is about 417.7515789229.

The spelling of 72904494 in words is "seventy-two million, nine hundred four thousand, four hundred ninety-four".