722947730 has 32 divisors (see below), whose sum is σ = 1371112704. Its totient is φ = 273911616.

The previous prime is 722947727. The next prime is 722947741. The reversal of 722947730 is 37749227.

722947730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8432 + ... + 38948.

It is an arithmetic number, because the mean of its divisors is an integer number (42847272).

Almost surely, 2^722947730 is an apocalyptic number.

722947730 is a deficient number, since it is larger than the sum of its proper divisors (648164974).

722947730 is a wasteful number, since it uses less digits than its factorization.

722947730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30650.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 722947730 is about 26887.6873308211. The cubic root of 722947730 is about 897.5024293663.

The spelling of 722947730 in words is "seven hundred twenty-two million, nine hundred forty-seven thousand, seven hundred thirty".