722028 has 12 divisors (see below), whose sum is σ = 1684760. Its totient is φ = 240672.

The previous prime is 722027. The next prime is 722047. The reversal of 722028 is 820227.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 721995 and 722013.

It is not an unprimeable number, because it can be changed into a prime (722023) 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, 30073 + ... + 30096.

2⁷²²⁰²⁸ is an apocalyptic number.

It is an amenable number.

722028 is an abundant number, since it is smaller than the sum of its proper divisors (962732).

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

722028 is a wasteful number, since it uses less digits than its factorization.

722028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60176 (or 60174 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 722028 is about 849.7223075805. The cubic root of 722028 is about 89.7121668687.

The spelling of 722028 in words is "seven hundred twenty-two thousand, twenty-eight".