722256040 has 64 divisors (see below), whose sum is σ = 1794260160. Its totient is φ = 259461120.

The previous prime is 722256001. The next prime is 722256061. The reversal of 722256040 is 40652227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26632 + ... + 46408.

It is an arithmetic number, because the mean of its divisors is an integer number (28035315).

Almost surely, 2^722256040 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 722256040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897130080).

722256040 is an abundant number, since it is smaller than the sum of its proper divisors (1072004120).

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

722256040 is a wasteful number, since it uses less digits than its factorization.

722256040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19882 (or 19878 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 722256040 is about 26874.8216738270. The cubic root of 722256040 is about 897.2161055104.

The spelling of 722256040 in words is "seven hundred twenty-two million, two hundred fifty-six thousand, forty".