722520328 has 16 divisors (see below), whose sum is σ = 1355477760. Its totient is φ = 361059600.

The previous prime is 722520319. The next prime is 722520329. The reversal of 722520328 is 823025227.

It is a self number, because there is not a number n which added to its sum of digits gives 722520328.

It is not an unprimeable number, because it can be changed into a prime (722520329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9168 + ... + 39103.

It is an arithmetic number, because the mean of its divisors is an integer number (84717360).

Almost surely, 2^722520328 is an apocalyptic number.

It is an amenable number.

722520328 is a deficient number, since it is larger than the sum of its proper divisors (632957432).

722520328 is a wasteful number, since it uses less digits than its factorization.

722520328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50148 (or 50144 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 722520328 is about 26879.7382427731. The cubic root of 722520328 is about 897.3255286328.

The spelling of 722520328 in words is "seven hundred twenty-two million, five hundred twenty thousand, three hundred twenty-eight".