722224 has 10 divisors (see below), whose sum is σ = 1399340. Its totient is φ = 361104.

The previous prime is 722213. The next prime is 722237. The reversal of 722224 is 422227.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22554 + ... + 22585.

It is an arithmetic number, because the mean of its divisors is an integer number (139934).

2⁷²²²²⁴ is an apocalyptic number.

It is an amenable number.

722224 is a deficient number, since it is larger than the sum of its proper divisors (677116).

722224 is a wasteful number, since it uses less digits than its factorization.

722224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45147 (or 45141 counting only the distinct ones).

The product of its digits is 448, while the sum is 19.

The square root of 722224 is about 849.8376315509. The cubic root of 722224 is about 89.7202838180.

It can be divided in two parts, 722 and 224, that added together give a triangular number (946 = T₄₃).

The spelling of 722224 in words is "seven hundred twenty-two thousand, two hundred twenty-four", and thus it is an iban number.