723432 has 32 divisors (see below), whose sum is σ = 1853280. Its totient is φ = 235200.

The previous prime is 723421. The next prime is 723439. The reversal of 723432 is 234327.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 723399 and 723408.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 723432.

It is not an unprimeable number, because it can be changed into a prime (723439) by changing a digit.

723432 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 1382.

It is an arithmetic number, because the mean of its divisors is an integer number (57915).

2⁷²³⁴³² 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 723432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926640).

723432 is an abundant number, since it is smaller than the sum of its proper divisors (1129848).

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

723432 is a wasteful number, since it uses less digits than its factorization.

723432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 749 counting only the distinct ones).

The product of its digits is 1008, while the sum is 21.

The square root of 723432 is about 850.5480586069. The cubic root of 723432 is about 89.7702783404.

Adding to 723432 its reverse (234327), we get a palindrome (957759).

The spelling of 723432 in words is "seven hundred twenty-three thousand, four hundred thirty-two".