722826 has 24 divisors (see below), whose sum is σ = 1687140. Its totient is φ = 222336.

The previous prime is 722819. The next prime is 722833. The reversal of 722826 is 628227.

It is an interprime number because it is at equal distance from previous prime (722819) and next prime (722833).

It can be written as a sum of positive squares in 2 ways, for example, as 720801 + 2025 = 849^2 + 45^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 722826.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1311 + ... + 1778.

2⁷²²⁸²⁶ is an apocalyptic number.

722826 is an abundant number, since it is smaller than the sum of its proper divisors (964314).

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

722826 is a wasteful number, since it uses less digits than its factorization.

722826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110 (or 3107 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 722826 is about 850.1917430792. The cubic root of 722826 is about 89.7452052694.

The spelling of 722826 in words is "seven hundred twenty-two thousand, eight hundred twenty-six".