723381432 has 64 divisors (see below), whose sum is σ = 1881010560. Its totient is φ = 231638400.

The previous prime is 723381427. The next prime is 723381457. The reversal of 723381432 is 234183327.

It is a junction number, because it is equal to n+sod(n) for n = 723381393 and 723381402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57207 + ... + 68697.

It is an arithmetic number, because the mean of its divisors is an integer number (29390790).

Almost surely, 2^723381432 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 723381432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940505280).

723381432 is an abundant number, since it is smaller than the sum of its proper divisors (1157629128).

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

723381432 is a wasteful number, since it uses less digits than its factorization.

723381432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11604 (or 11600 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 723381432 is about 26895.7511886171. The cubic root of 723381432 is about 897.6818663991.

The spelling of 723381432 in words is "seven hundred twenty-three million, three hundred eighty-one thousand, four hundred thirty-two".