722392 has 16 divisors (see below), whose sum is σ = 1477800. Its totient is φ = 328320.

The previous prime is 722389. The next prime is 722411. The reversal of 722392 is 293227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4017 + ... + 4192.

2⁷²²³⁹² is an apocalyptic number.

It is an amenable number.

722392 is an abundant number, since it is smaller than the sum of its proper divisors (755408).

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

722392 is a wasteful number, since it uses less digits than its factorization.

722392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8226 (or 8222 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 722392 is about 849.9364682139. The cubic root of 722392 is about 89.7272400343.

It can be divided in two parts, 722 and 392, that multiplied together give a square (283024 = 532²).

The spelling of 722392 in words is "seven hundred twenty-two thousand, three hundred ninety-two".