724570730 has 16 divisors (see below), whose sum is σ = 1404552744. Its totient is φ = 267533760.

The previous prime is 724570729. The next prime is 724570801. The reversal of 724570730 is 37075427.

It can be written as a sum of positive squares in 4 ways, for example, as 355661881 + 368908849 = 18859^2 + 19207^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2786681 + ... + 2786940.

Almost surely, 2^724570730 is an apocalyptic number.

724570730 is a deficient number, since it is larger than the sum of its proper divisors (679982014).

724570730 is a wasteful number, since it uses less digits than its factorization.

724570730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573641.

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 724570730 is about 26917.8515115899. The cubic root of 724570730 is about 898.1735510784.

The spelling of 724570730 in words is "seven hundred twenty-four million, five hundred seventy thousand, seven hundred thirty".