724822 has 16 divisors (see below), whose sum is σ = 1297152. Its totient is φ = 297000.

The previous prime is 724813. The next prime is 724837. The reversal of 724822 is 228427.

It is a congruent number.

It is an unprimeable number.

724822 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 7 ways as a sum of consecutive naturals, for example, 804 + ... + 1447.

It is an arithmetic number, because the mean of its divisors is an integer number (81072).

2⁷²⁴⁸²² is an apocalyptic number.

724822 is a deficient number, since it is larger than the sum of its proper divisors (572330).

724822 is a wasteful number, since it uses less digits than its factorization.

724822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283.

The product of its digits is 1792, while the sum is 25.

The square root of 724822 is about 851.3647866808. The cubic root of 724822 is about 89.8277363343.

The spelling of 724822 in words is "seven hundred twenty-four thousand, eight hundred twenty-two".