28376907680 has 96 divisors (see below), whose sum is σ = 73889444160. Its totient is φ = 10212433920.

The previous prime is 28376907679. The next prime is 28376907707. The reversal of 28376907680 is 8670967382.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87611 + ... + 253829.

It is an arithmetic number, because the mean of its divisors is an integer number (769681710).

Almost surely, 2^28376907680 is an apocalyptic number.

28376907680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28376907680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36944722080).

28376907680 is an abundant number, since it is smaller than the sum of its proper divisors (45512536480).

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

28376907680 is a wasteful number, since it uses less digits than its factorization.

28376907680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166342 (or 166334 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 28376907680 in words is "twenty-eight billion, three hundred seventy-six million, nine hundred seven thousand, six hundred eighty".