722118720 has 56 divisors (see below), whose sum is σ = 2292729984. Its totient is φ = 192564736.

The previous prime is 722118713. The next prime is 722118797. The reversal of 722118720 is 27811227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375144 + ... + 377063.

Almost surely, 2^722118720 is an apocalyptic number.

It is an amenable number.

722118720 is an abundant number, since it is smaller than the sum of its proper divisors (1570611264).

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

722118720 is a wasteful number, since it uses less digits than its factorization.

722118720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752227 (or 752217 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 722118720 is about 26872.2667447315. The cubic root of 722118720 is about 897.1592403925.

Adding to 722118720 its reverse (27811227), we get a palindrome (749929947).

The spelling of 722118720 in words is "seven hundred twenty-two million, one hundred eighteen thousand, seven hundred twenty".