23209784228 has 12 divisors (see below), whose sum is σ = 40636655052. Its totient is φ = 11599311360.

The previous prime is 23209784203. The next prime is 23209784237. The reversal of 23209784228 is 82248790232.

It can be written as a sum of positive squares in 2 ways, for example, as 12372557824 + 10837226404 = 111232^2 + 104102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385825 + ... + 1402472.

It is an arithmetic number, because the mean of its divisors is an integer number (3386387921).

Almost surely, 2^23209784228 is an apocalyptic number.

It is an amenable number.

23209784228 is a deficient number, since it is larger than the sum of its proper divisors (17426870824).

23209784228 is a wasteful number, since it uses less digits than its factorization.

23209784228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790382 (or 2790380 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 23209784228 in words is "twenty-three billion, two hundred nine million, seven hundred eighty-four thousand, two hundred twenty-eight".