722452128 has 96 divisors (see below), whose sum is σ = 2022148800. Its totient is φ = 225054720.

The previous prime is 722452099. The next prime is 722452153. The reversal of 722452128 is 821254227.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241683 + ... + 244653.

It is an arithmetic number, because the mean of its divisors is an integer number (21064050).

Almost surely, 2^722452128 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 722452128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011074400).

722452128 is an abundant number, since it is smaller than the sum of its proper divisors (1299696672).

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

722452128 is a wasteful number, since it uses less digits than its factorization.

722452128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150 (or 3142 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 722452128 is about 26878.4695992908. The cubic root of 722452128 is about 897.2972943515.

The spelling of 722452128 in words is "seven hundred twenty-two million, four hundred fifty-two thousand, one hundred twenty-eight".