724432868 has 12 divisors (see below), whose sum is σ = 1297240560. Its totient is φ = 353792712.

The previous prime is 724432867. The next prime is 724432873. The reversal of 724432868 is 868234427.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (724432861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2105738 + ... + 2106081.

It is an arithmetic number, because the mean of its divisors is an integer number (108103380).

Almost surely, 2^724432868 is an apocalyptic number.

It is an amenable number.

724432868 is a deficient number, since it is larger than the sum of its proper divisors (572807692).

724432868 is a wasteful number, since it uses less digits than its factorization.

724432868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211866 (or 4211864 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 724432868 is about 26915.2905984684. The cubic root of 724432868 is about 898.1165831612.

The spelling of 724432868 in words is "seven hundred twenty-four million, four hundred thirty-two thousand, eight hundred sixty-eight".