722039724 has 96 divisors (see below), whose sum is σ = 2208460800. Its totient is φ = 199635840.

The previous prime is 722039711. The next prime is 722039741. The reversal of 722039724 is 427930227.

722039724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8032 + ... + 38840.

It is an arithmetic number, because the mean of its divisors is an integer number (23004800).

Almost surely, 2^722039724 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 722039724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104230400).

722039724 is an abundant number, since it is smaller than the sum of its proper divisors (1486421076).

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

722039724 is a wasteful number, since it uses less digits than its factorization.

722039724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30860 (or 30852 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 722039724 is about 26870.7968620210. The cubic root of 722039724 is about 897.1265243612.

The spelling of 722039724 in words is "seven hundred twenty-two million, thirty-nine thousand, seven hundred twenty-four".