28081675556 has 96 divisors (see below), whose sum is σ = 61210235520. Its totient is φ = 11103436800.

The previous prime is 28081675553. The next prime is 28081675561. The reversal of 28081675556 is 65557618082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28081675498 and 28081675507.

It is not an unprimeable number, because it can be changed into a prime (28081675553) 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, 558596 + ... + 606788.

It is an arithmetic number, because the mean of its divisors is an integer number (637606620).

Almost surely, 2^28081675556 is an apocalyptic number.

It is an amenable number.

28081675556 is an abundant number, since it is smaller than the sum of its proper divisors (33128559964).

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

28081675556 is a wasteful number, since it uses less digits than its factorization.

28081675556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48285 (or 48283 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 53.

The spelling of 28081675556 in words is "twenty-eight billion, eighty-one million, six hundred seventy-five thousand, five hundred fifty-six".