722004144 has 80 divisors (see below), whose sum is σ = 1990729728. Its totient is φ = 224695296.

The previous prime is 722004133. The next prime is 722004163. The reversal of 722004144 is 441400227.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 100149 + ... + 107115.

Almost surely, 2^722004144 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 722004144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995364864).

722004144 is an abundant number, since it is smaller than the sum of its proper divisors (1268725584).

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

722004144 is a wasteful number, since it uses less digits than its factorization.

722004144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122 (or 7116 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 722004144 is about 26870.1347968335. The cubic root of 722004144 is about 897.1117881978. Note that the first 3 decimals are identical.

The spelling of 722004144 in words is "seven hundred twenty-two million, four thousand, one hundred forty-four".