722826720 has 768 divisors, whose sum is σ = 3292047360. Its totient is φ = 143769600.

The previous prime is 722826719. The next prime is 722826733. The reversal of 722826720 is 27628227.

722826720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13638214 + ... + 13638266.

It is an arithmetic number, because the mean of its divisors is an integer number (4286520).

Almost surely, 2^722826720 is an apocalyptic number.

722826720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722826720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646023680).

722826720 is an abundant number, since it is smaller than the sum of its proper divisors (2569220640).

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

722826720 is a wasteful number, since it uses less digits than its factorization.

722826720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 722826720 is about 26885.4369501409. The cubic root of 722826720 is about 897.4523506747.

The spelling of 722826720 in words is "seven hundred twenty-two million, eight hundred twenty-six thousand, seven hundred twenty".