722894320 has 20 divisors (see below), whose sum is σ = 1680729480. Its totient is φ = 289157696.

The previous prime is 722894303. The next prime is 722894321. The reversal of 722894320 is 23498227.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×722894320³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 722894320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722894321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4518010 + ... + 4518169.

It is an arithmetic number, because the mean of its divisors is an integer number (84036474).

Almost surely, 2^722894320 is an apocalyptic number.

It is an amenable number.

722894320 is an abundant number, since it is smaller than the sum of its proper divisors (957835160).

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

722894320 is a wasteful number, since it uses less digits than its factorization.

722894320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9036192 (or 9036186 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 722894320 is about 26886.6941069370. The cubic root of 722894320 is about 897.4803268992.

The spelling of 722894320 in words is "seven hundred twenty-two million, eight hundred ninety-four thousand, three hundred twenty".