28565913186 has 48 divisors (see below), whose sum is σ = 62432061120. Its totient is φ = 9439166880.

The previous prime is 28565913179. The next prime is 28565913241. The reversal of 28565913186 is 68131956582.

It is a super-2 number, since 2×28565913186² (a number of 22 digits) contains 22 as substring.

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, 2382675 + ... + 2394633.

It is an arithmetic number, because the mean of its divisors is an integer number (1300667940).

Almost surely, 2^28565913186 is an apocalyptic number.

28565913186 is an abundant number, since it is smaller than the sum of its proper divisors (33866147934).

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

28565913186 is a wasteful number, since it uses less digits than its factorization.

28565913186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13111 (or 13108 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The spelling of 28565913186 in words is "twenty-eight billion, five hundred sixty-five million, nine hundred thirteen thousand, one hundred eighty-six".