723824 has 20 divisors (see below), whose sum is σ = 1476840. Its totient is φ = 342720.

The previous prime is 723823. The next prime is 723829. The reversal of 723824 is 428327.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 723793 and 723802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723823) 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, 887 + ... + 1494.

It is an arithmetic number, because the mean of its divisors is an integer number (73842).

2⁷²³⁸²⁴ is an apocalyptic number.

It is an amenable number.

723824 is an abundant number, since it is smaller than the sum of its proper divisors (753016).

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

723824 is a wasteful number, since it uses less digits than its factorization.

723824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408 (or 2402 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 723824 is about 850.7784670524. The cubic root of 723824 is about 89.7864897673.

The spelling of 723824 in words is "seven hundred twenty-three thousand, eight hundred twenty-four".