722215472 has 80 divisors (see below), whose sum is σ = 1561804800. Its totient is φ = 320785920.

The previous prime is 722215447. The next prime is 722215511. The reversal of 722215472 is 274512227.

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, 1765604 + ... + 1766012.

It is an arithmetic number, because the mean of its divisors is an integer number (19522560).

Almost surely, 2^722215472 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 722215472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780902400).

722215472 is an abundant number, since it is smaller than the sum of its proper divisors (839589328).

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

722215472 is a wasteful number, since it uses less digits than its factorization.

722215472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 628 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 722215472 is about 26874.0669047318. The cubic root of 722215472 is about 897.1993067842.

Adding to 722215472 its reverse (274512227), we get a palindrome (996727699).

The spelling of 722215472 in words is "seven hundred twenty-two million, two hundred fifteen thousand, four hundred seventy-two".