724733040 has 40 divisors (see below), whose sum is σ = 2246673168. Its totient is φ = 193262080.

The previous prime is 724733039. The next prime is 724733041. The reversal of 724733040 is 40337427.

It is an interprime number because it is at equal distance from previous prime (724733039) and next prime (724733041).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 724732989 and 724733007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724733041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509621 + ... + 1510100.

Almost surely, 2^724733040 is an apocalyptic number.

It is an amenable number.

724733040 is an abundant number, since it is smaller than the sum of its proper divisors (1521940128).

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

724733040 is a wasteful number, since it uses less digits than its factorization.

724733040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019737 (or 3019731 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 724733040 is about 26920.8662564933. The cubic root of 724733040 is about 898.2406122403.

The spelling of 724733040 in words is "seven hundred twenty-four million, seven hundred thirty-three thousand, forty".