28177898676 has 48 divisors (see below), whose sum is σ = 66698575104. Its totient is φ = 9257089536.

The previous prime is 28177898647. The next prime is 28177898699. The reversal of 28177898676 is 67689877182.

It is a self number, because there is not a number n which added to its sum of digits gives 28177898676.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1244085 + ... + 1266531.

It is an arithmetic number, because the mean of its divisors is an integer number (1389553648).

Almost surely, 2^28177898676 is an apocalyptic number.

It is an amenable number.

28177898676 is an abundant number, since it is smaller than the sum of its proper divisors (38520676428).

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

28177898676 is a wasteful number, since it uses less digits than its factorization.

28177898676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23960 (or 23958 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 69.

The spelling of 28177898676 in words is "twenty-eight billion, one hundred seventy-seven million, eight hundred ninety-eight thousand, six hundred seventy-six".