722543320 has 32 divisors (see below), whose sum is σ = 1626688800. Its totient is φ = 288845568.

The previous prime is 722543317. The next prime is 722543347. The reversal of 722543320 is 23345227.

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, 79237 + ... + 87883.

It is an arithmetic number, because the mean of its divisors is an integer number (50834025).

Almost surely, 2^722543320 is an apocalyptic number.

It is an amenable number.

722543320 is an abundant number, since it is smaller than the sum of its proper divisors (904145480).

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

722543320 is a wasteful number, since it uses less digits than its factorization.

722543320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10747 (or 10743 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 722543320 is about 26880.1659221070. The cubic root of 722543320 is about 897.3350467455.

Adding to 722543320 its reverse (23345227), we get a palindrome (745888547).

The spelling of 722543320 in words is "seven hundred twenty-two million, five hundred forty-three thousand, three hundred twenty".