722146144 has 48 divisors (see below), whose sum is σ = 1441540800. Its totient is φ = 356079744.

The previous prime is 722146133. The next prime is 722146151. The reversal of 722146144 is 441641227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795739 + ... + 796645.

It is an arithmetic number, because the mean of its divisors is an integer number (30032100).

Almost surely, 2^722146144 is an apocalyptic number.

It is an amenable number.

722146144 is a deficient number, since it is larger than the sum of its proper divisors (719394656).

722146144 is a wasteful number, since it uses less digits than its factorization.

722146144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1227 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 722146144 is about 26872.7770057357. Note that the first 3 decimals coincide. The cubic root of 722146144 is about 897.1705974279.

The spelling of 722146144 in words is "seven hundred twenty-two million, one hundred forty-six thousand, one hundred forty-four".