722748730 has 96 divisors (see below), whose sum is σ = 1516838400. Its totient is φ = 247336320.

The previous prime is 722748721. The next prime is 722748731. The reversal of 722748730 is 37847227.

722748730 is nontrivially palindromic in base 4.

It is a super-2 number, since 2×722748730² = 1044731453433225800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722748731) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1508631 + ... + 1509109.

It is an arithmetic number, because the mean of its divisors is an integer number (15800400).

Almost surely, 2^722748730 is an apocalyptic number.

722748730 is an abundant number, since it is smaller than the sum of its proper divisors (794089670).

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

722748730 is a wasteful number, since it uses less digits than its factorization.

722748730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 722748730 is about 26883.9864975416. The cubic root of 722748730 is about 897.4200723871.

The spelling of 722748730 in words is "seven hundred twenty-two million, seven hundred forty-eight thousand, seven hundred thirty".