28010866680 has 96 divisors (see below), whose sum is σ = 96390356400. Its totient is φ = 7030176768.

The previous prime is 28010866673. The next prime is 28010866691. The reversal of 28010866680 is 8666801082.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2282350 + ... + 2294589.

Almost surely, 2^28010866680 is an apocalyptic number.

28010866680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28010866680 is an abundant number, since it is smaller than the sum of its proper divisors (68379489720).

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

28010866680 is a wasteful number, since it uses less digits than its factorization.

28010866680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576973 (or 4576966 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 28010866680 in words is "twenty-eight billion, ten million, eight hundred sixty-six thousand, six hundred eighty".