722880720 has 80 divisors (see below), whose sum is σ = 2489929920. Its totient is φ = 192767616.

The previous prime is 722880703. The next prime is 722880721. The reversal of 722880720 is 27088227.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722880721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165174 + ... + 169493.

It is an arithmetic number, because the mean of its divisors is an integer number (31124124).

Almost surely, 2^722880720 is an apocalyptic number.

It is an amenable number.

722880720 is an abundant number, since it is smaller than the sum of its proper divisors (1767049200).

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

722880720 is a wasteful number, since it uses less digits than its factorization.

722880720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334689 (or 334677 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 722880720 is about 26886.4411925416. The cubic root of 722880720 is about 897.4746986864.

The spelling of 722880720 in words is "seven hundred twenty-two million, eight hundred eighty thousand, seven hundred twenty".