722836 has 12 divisors (see below), whose sum is σ = 1331680. Its totient is φ = 342360.

The previous prime is 722833. The next prime is 722849. The reversal of 722836 is 638227.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4680 + ... + 4831.

2⁷²²⁸³⁶ is an apocalyptic number.

722836 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

722836 is a deficient number, since it is larger than the sum of its proper divisors (608844).

722836 is a wasteful number, since it uses less digits than its factorization.

722836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534 (or 9532 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 722836 is about 850.1976240851. The cubic root of 722836 is about 89.7456191301.

The spelling of 722836 in words is "seven hundred twenty-two thousand, eight hundred thirty-six".