20503468228 has 12 divisors (see below), whose sum is σ = 35884642752. Its totient is φ = 10250713160.

The previous prime is 20503468213. The next prime is 20503468229. The reversal of 20503468228 is 82286430502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20503468229) 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 3 ways as a sum of consecutive naturals, for example, 209128 + ... + 291103.

It is an arithmetic number, because the mean of its divisors is an integer number (2990386896).

Almost surely, 2^20503468228 is an apocalyptic number.

It is an amenable number.

20503468228 is a deficient number, since it is larger than the sum of its proper divisors (15381174524).

20503468228 is a wasteful number, since it uses less digits than its factorization.

20503468228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510482 (or 510480 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 20503468228 in words is "twenty billion, five hundred three million, four hundred sixty-eight thousand, two hundred twenty-eight".