28081675560 has 128 divisors (see below), whose sum is σ = 87249312000. Its totient is φ = 7221989376.

The previous prime is 28081675553. The next prime is 28081675561. The reversal of 28081675560 is 6557618082.

It is not an unprimeable number, because it can be changed into a prime (28081675561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3416736 + ... + 3424944.

It is an arithmetic number, because the mean of its divisors is an integer number (681635250).

Almost surely, 2^28081675560 is an apocalyptic number.

28081675560 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 28081675560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43624656000).

28081675560 is an abundant number, since it is smaller than the sum of its proper divisors (59167636440).

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

28081675560 is a wasteful number, since it uses less digits than its factorization.

28081675560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9235 (or 9231 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 28081675560 in words is "twenty-eight billion, eighty-one million, six hundred seventy-five thousand, five hundred sixty".