723912 has 64 divisors (see below), whose sum is σ = 2150400. Its totient is φ = 198720.

The previous prime is 723907. The next prime is 723913. The reversal of 723912 is 219327.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (723913) 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, 5139 + ... + 5277.

It is an arithmetic number, because the mean of its divisors is an integer number (33600).

2⁷²³⁹¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 723912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075200).

723912 is an abundant number, since it is smaller than the sum of its proper divisors (1426488).

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

723912 is a wasteful number, since it uses less digits than its factorization.

723912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 182 counting only the distinct ones).

The product of its digits is 756, while the sum is 24.

The square root of 723912 is about 850.8301828215. The cubic root of 723912 is about 89.7901282627.

It can be divided in two parts, 7239 and 12, that multiplied together give a palindrome (86868).

The spelling of 723912 in words is "seven hundred twenty-three thousand, nine hundred twelve".