722427168 has 48 divisors (see below), whose sum is σ = 1914808896. Its totient is φ = 238467840.

The previous prime is 722427163. The next prime is 722427169. The reversal of 722427168 is 861724227.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (722427163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26643 + ... + 46418.

It is an arithmetic number, because the mean of its divisors is an integer number (39891852).

Almost surely, 2^722427168 is an apocalyptic number.

It is an amenable number.

722427168 is an abundant number, since it is smaller than the sum of its proper divisors (1192381728).

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

722427168 is a wasteful number, since it uses less digits than its factorization.

722427168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73177 (or 73169 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 722427168 is about 26878.0052831307. The cubic root of 722427168 is about 897.2869606571.

The spelling of 722427168 in words is "seven hundred twenty-two million, four hundred twenty-seven thousand, one hundred sixty-eight".