722156320 has 24 divisors (see below), whose sum is σ = 1706094684. Its totient is φ = 288862464.

The previous prime is 722156299. The next prime is 722156321. The reversal of 722156320 is 23651227.

It can be written as a sum of positive squares in 2 ways, for example, as 684554896 + 37601424 = 26164^2 + 6132^2 .

It is not an unprimeable number, because it can be changed into a prime (722156321) 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 3 ways as a sum of consecutive naturals, for example, 2256579 + ... + 2256898.

Almost surely, 2^722156320 is an apocalyptic number.

It is an amenable number.

722156320 is an abundant number, since it is smaller than the sum of its proper divisors (983938364).

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

722156320 is a wasteful number, since it uses less digits than its factorization.

722156320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513492 (or 4513484 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 722156320 is about 26872.9663416602. The cubic root of 722156320 is about 897.1748115172.

The spelling of 722156320 in words is "seven hundred twenty-two million, one hundred fifty-six thousand, three hundred twenty".