28017819594 has 16 divisors (see below), whose sum is σ = 62261821440. Its totient is φ = 9339273180.

The previous prime is 28017819589. The next prime is 28017819607. The reversal of 28017819594 is 49591871082.

It is a happy number.

28017819594 is a `hidden beast` number, since 28 + 0 + 17 + 8 + 19 + 594 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 518848511 = 28017819594 / (2 + 8 + 0 + 1 + 7 + 8 + 1 + 9 + 5 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 28017819594.

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, 259424202 + ... + 259424309.

It is an arithmetic number, because the mean of its divisors is an integer number (3891363840).

Almost surely, 2^28017819594 is an apocalyptic number.

28017819594 is an abundant number, since it is smaller than the sum of its proper divisors (34244001846).

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

28017819594 is a wasteful number, since it uses less digits than its factorization.

28017819594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518848522 (or 518848516 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 28017819594 in words is "twenty-eight billion, seventeen million, eight hundred nineteen thousand, five hundred ninety-four".