722405312 has 28 divisors (see below), whose sum is σ = 1482958680. Its totient is φ = 348746496.

The previous prime is 722405303. The next prime is 722405339. The reversal of 722405312 is 213504227.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192758 + ... + 196469.

It is an arithmetic number, because the mean of its divisors is an integer number (52962810).

Almost surely, 2^722405312 is an apocalyptic number.

It is an amenable number.

722405312 is an abundant number, since it is smaller than the sum of its proper divisors (760553368).

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

722405312 is a wasteful number, since it uses less digits than its factorization.

722405312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389268 (or 389258 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 722405312 is about 26877.5987022651. The cubic root of 722405312 is about 897.2779118550.

Adding to 722405312 its reverse (213504227), we get a palindrome (935909539).

The spelling of 722405312 in words is "seven hundred twenty-two million, four hundred five thousand, three hundred twelve".