722811276 has 144 divisors (see below), whose sum is σ = 2099959680. Its totient is φ = 215550720.

The previous prime is 722811269. The next prime is 722811289. The reversal of 722811276 is 672118227.

It is a super-2 number, since 2×722811276² = 1044912281425496352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 722811276.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 715860 + ... + 716868.

Almost surely, 2^722811276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722811276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049979840).

722811276 is an abundant number, since it is smaller than the sum of its proper divisors (1377148404).

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

722811276 is a wasteful number, since it uses less digits than its factorization.

722811276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106 (or 1092 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 722811276 is about 26885.1497299160. The cubic root of 722811276 is about 897.4459589386.

The spelling of 722811276 in words is "seven hundred twenty-two million, eight hundred eleven thousand, two hundred seventy-six".