728212924 has 48 divisors (see below), whose sum is σ = 1377331200. Its totient is φ = 335797056.

The previous prime is 728212907. The next prime is 728212949. The reversal of 728212924 is 429212827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 853282 + ... + 854134.

It is an arithmetic number, because the mean of its divisors is an integer number (28694400).

Almost surely, 2^728212924 is an apocalyptic number.

It is an amenable number.

728212924 is a deficient number, since it is larger than the sum of its proper divisors (649118276).

728212924 is a wasteful number, since it uses less digits than its factorization.

728212924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1160 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 728212924 is about 26985.4205822329. The cubic root of 728212924 is about 899.6759837738.

The spelling of 728212924 in words is "seven hundred twenty-eight million, two hundred twelve thousand, nine hundred twenty-four".