723745930 has 32 divisors (see below), whose sum is σ = 1380718224. Its totient is φ = 272203776.

The previous prime is 723745921. The next prime is 723745931. The reversal of 723745930 is 39547327.

723745930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 354606561 + 369139369 = 18831^2 + 19213^2 .

It is not an unprimeable number, because it can be changed into a prime (723745931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317274 + ... + 319546.

Almost surely, 2^723745930 is an apocalyptic number.

723745930 is a deficient number, since it is larger than the sum of its proper divisors (656972294).

723745930 is a wasteful number, since it uses less digits than its factorization.

723745930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170.

The product of its (nonzero) digits is 158760, while the sum is 40.

The square root of 723745930 is about 26902.5264612824. The cubic root of 723745930 is about 897.8326159616.

The spelling of 723745930 in words is "seven hundred twenty-three million, seven hundred forty-five thousand, nine hundred thirty".