28100640076 has 12 divisors (see below), whose sum is σ = 52068833208. Its totient is φ = 13223830592.

The previous prime is 28100640053. The next prime is 28100640089. The reversal of 28100640076 is 67004600182.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 206622286 + ... + 206622421.

It is an arithmetic number, because the mean of its divisors is an integer number (4339069434).

Almost surely, 2^28100640076 is an apocalyptic number.

It is an amenable number.

28100640076 is a deficient number, since it is larger than the sum of its proper divisors (23968193132).

28100640076 is a wasteful number, since it uses less digits than its factorization.

28100640076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413244728 (or 413244726 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 28100640076 in words is "twenty-eight billion, one hundred million, six hundred forty thousand, seventy-six".