823228730 has 16 divisors (see below), whose sum is σ = 1494927144. Its totient is φ = 326376960.

The previous prime is 823228727. The next prime is 823228739. The reversal of 823228730 is 37822328.

It can be written as a sum of positive squares in 4 ways, for example, as 181467841 + 641760889 = 13471^2 + 25333^2 .

It is not an unprimeable number, because it can be changed into a prime (823228739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363131 + ... + 365390.

Almost surely, 2^823228730 is an apocalyptic number.

823228730 is a deficient number, since it is larger than the sum of its proper divisors (671698414).

823228730 is a wasteful number, since it uses less digits than its factorization.

823228730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728641.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 823228730 is about 28691.9628119095. The cubic root of 823228730 is about 937.2170329410.

The spelling of 823228730 in words is "eight hundred twenty-three million, two hundred twenty-eight thousand, seven hundred thirty".