724028 has 12 divisors (see below), whose sum is σ = 1273272. Its totient is φ = 360240.

The previous prime is 724021. The next prime is 724079. The reversal of 724028 is 820427.

It is a junction number, because it is equal to n+sod(n) for n = 723994 and 724012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724021) 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, 983 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (106106).

2⁷²⁴⁰²⁸ is an apocalyptic number.

It is an amenable number.

724028 is a deficient number, since it is larger than the sum of its proper divisors (549244).

724028 is a wasteful number, since it uses less digits than its factorization.

724028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 724028 is about 850.8983488055. The cubic root of 724028 is about 89.7949240107.

The spelling of 724028 in words is "seven hundred twenty-four thousand, twenty-eight".