28250820186 has 16 divisors (see below), whose sum is σ = 56516350944. Its totient is φ = 9414488304.

The previous prime is 28250820161. The next prime is 28250820223. The reversal of 28250820186 is 68102805282.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587896 + ... + 634131.

It is an arithmetic number, because the mean of its divisors is an integer number (3532271934).

Almost surely, 2^28250820186 is an apocalyptic number.

28250820186 is an abundant number, since it is smaller than the sum of its proper divisors (28265530758).

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

28250820186 is a wasteful number, since it uses less digits than its factorization.

28250820186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225885.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 28250820186 in words is "twenty-eight billion, two hundred fifty million, eight hundred twenty thousand, one hundred eighty-six".