724904 has 32 divisors (see below), whose sum is σ = 1459200. Its totient is φ = 336960.

The previous prime is 724903. The next prime is 724939. The reversal of 724904 is 409427.

724904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9137 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (45600).

2⁷²⁴⁹⁰⁴ is an apocalyptic number.

724904 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

724904 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

724904 is a wasteful number, since it uses less digits than its factorization.

724904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 724904 is about 851.4129432890. The cubic root of 724904 is about 89.8311236472.

The spelling of 724904 in words is "seven hundred twenty-four thousand, nine hundred four".