722515530 has 64 divisors (see below), whose sum is σ = 1937851776. Its totient is φ = 170880000.

The previous prime is 722515523. The next prime is 722515553. The reversal of 722515530 is 35515227.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 13171 + ... + 40230.

It is an arithmetic number, because the mean of its divisors is an integer number (30278934).

Almost surely, 2^722515530 is an apocalyptic number.

722515530 is an abundant number, since it is smaller than the sum of its proper divisors (1215336246).

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

722515530 is a wasteful number, since it uses less digits than its factorization.

722515530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53463.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 722515530 is about 26879.6489932439. The cubic root of 722515530 is about 897.3235423554.

The spelling of 722515530 in words is "seven hundred twenty-two million, five hundred fifteen thousand, five hundred thirty".