28531202100 has 36 divisors (see below), whose sum is σ = 82550278944. Its totient is φ = 7608320480.

The previous prime is 28531202099. The next prime is 28531202267. The reversal of 28531202100 is 120213582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47551704 + ... + 47552303.

It is an arithmetic number, because the mean of its divisors is an integer number (2293063304).

Almost surely, 2^28531202100 is an apocalyptic number.

28531202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28531202100 is an abundant number, since it is smaller than the sum of its proper divisors (54019076844).

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

28531202100 is a wasteful number, since it uses less digits than its factorization.

28531202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95104024 (or 95104017 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 28531202100 its reverse (120213582), we get a palindrome (28651415682).

The spelling of 28531202100 in words is "twenty-eight billion, five hundred thirty-one million, two hundred two thousand, one hundred".