722391824 has 80 divisors (see below), whose sum is σ = 1760780160. Its totient is φ = 278906880.

The previous prime is 722391823. The next prime is 722391841. The reversal of 722391824 is 428193227.

It is not an unprimeable number, because it can be changed into a prime (722391823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136622 + ... + 141810.

It is an arithmetic number, because the mean of its divisors is an integer number (22009752).

Almost surely, 2^722391824 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 722391824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880390080).

722391824 is an abundant number, since it is smaller than the sum of its proper divisors (1038388336).

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

722391824 is a wasteful number, since it uses less digits than its factorization.

722391824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328 (or 5322 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 722391824 is about 26877.3477858214. The cubic root of 722391824 is about 897.2723274738.

The spelling of 722391824 in words is "seven hundred twenty-two million, three hundred ninety-one thousand, eight hundred twenty-four".