724386740 has 96 divisors (see below), whose sum is σ = 1947988224. Its totient is φ = 219663360.

The previous prime is 724386739. The next prime is 724386749. The reversal of 724386740 is 47683427.

724386740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×724386740² = 1049472298175655200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724386749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50624 + ... + 63336.

It is an arithmetic number, because the mean of its divisors is an integer number (20291544).

Almost surely, 2^724386740 is an apocalyptic number.

724386740 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724386740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973994112).

724386740 is an abundant number, since it is smaller than the sum of its proper divisors (1223601484).

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

724386740 is a wasteful number, since it uses less digits than its factorization.

724386740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12777 (or 12775 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 724386740 is about 26914.4336741459. The cubic root of 724386740 is about 898.0975203407.

The spelling of 724386740 in words is "seven hundred twenty-four million, three hundred eighty-six thousand, seven hundred forty".