723713920 has 32 divisors (see below), whose sum is σ = 1730130120. Its totient is φ = 289485312.

The previous prime is 723713899. The next prime is 723713923. The reversal of 723713920 is 29317327.

723713920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723713923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564762 + ... + 566041.

Almost surely, 2^723713920 is an apocalyptic number.

It is an amenable number.

723713920 is an abundant number, since it is smaller than the sum of its proper divisors (1006416200).

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

723713920 is a wasteful number, since it uses less digits than its factorization.

723713920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130822 (or 1130810 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 723713920 is about 26901.9315291672. The cubic root of 723713920 is about 897.8193792513.

The spelling of 723713920 in words is "seven hundred twenty-three million, seven hundred thirteen thousand, nine hundred twenty".