28617808680 has 96 divisors (see below), whose sum is σ = 96452647200. Its totient is φ = 7631413056.

The previous prime is 28617808663. The next prime is 28617808711. The reversal of 28617808680 is 8680871682.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1462390 + ... + 1481829.

It is an arithmetic number, because the mean of its divisors is an integer number (1004715075).

Almost surely, 2^28617808680 is an apocalyptic number.

28617808680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28617808680 is an abundant number, since it is smaller than the sum of its proper divisors (67834838520).

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

28617808680 is a wasteful number, since it uses less digits than its factorization.

28617808680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944245 (or 2944229 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 28617808680 in words is "twenty-eight billion, six hundred seventeen million, eight hundred eight thousand, six hundred eighty".