722812 has 12 divisors (see below), whose sum is σ = 1275120. Its totient is φ = 358496.

The previous prime is 722807. The next prime is 722819. The reversal of 722812 is 218227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722819) by changing a digit.

722812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (106260).

2⁷²²⁸¹² is an apocalyptic number.

It is an amenable number.

722812 is a deficient number, since it is larger than the sum of its proper divisors (552308).

722812 is a wasteful number, since it uses less digits than its factorization.

722812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460 (or 1458 counting only the distinct ones).

The product of its digits is 448, while the sum is 22.

The square root of 722812 is about 850.1835096025. The cubic root of 722812 is about 89.7446258579.

It can be divided in two parts, 7228 and 12, that multiplied together give a triangular number (86736 = T₄₁₆).

The spelling of 722812 in words is "seven hundred twenty-two thousand, eight hundred twelve".