722815452 has 72 divisors (see below), whose sum is σ = 1946061936. Its totient is φ = 225421824.

The previous prime is 722815451. The next prime is 722815463. The reversal of 722815452 is 254518227.

It is a happy number.

722815452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722815451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102463 + ... + 109289.

It is an arithmetic number, because the mean of its divisors is an integer number (27028638).

Almost surely, 2^722815452 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 722815452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973030968).

722815452 is an abundant number, since it is smaller than the sum of its proper divisors (1223246484).

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

722815452 is a wasteful number, since it uses less digits than its factorization.

722815452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027 (or 7022 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 722815452 is about 26885.2273934962. The cubic root of 722815452 is about 897.4476872492.

The spelling of 722815452 in words is "seven hundred twenty-two million, eight hundred fifteen thousand, four hundred fifty-two".