723928 has 16 divisors (see below), whose sum is σ = 1437480. Its totient is φ = 340608.

The previous prime is 723923. The next prime is 723949. The reversal of 723928 is 829327.

723928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 723928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526 + ... + 2797.

2⁷²³⁹²⁸ is an apocalyptic number.

It is an amenable number.

723928 is a deficient number, since it is larger than the sum of its proper divisors (713552).

723928 is a wasteful number, since it uses less digits than its factorization.

723928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346 (or 5342 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 723928 is about 850.8395853508. The cubic root of 723928 is about 89.7907897757.

The spelling of 723928 in words is "seven hundred twenty-three thousand, nine hundred twenty-eight".