28279384230 has 32 divisors (see below), whose sum is σ = 71862907104. Its totient is φ = 7097570816.

The previous prime is 28279384193. The next prime is 28279384253. The reversal of 28279384230 is 3248397282.

It is a self number, because there is not a number n which added to its sum of digits gives 28279384230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27724377 + ... + 27725396.

It is an arithmetic number, because the mean of its divisors is an integer number (2245715847).

Almost surely, 2^28279384230 is an apocalyptic number.

28279384230 is an abundant number, since it is smaller than the sum of its proper divisors (43583522874).

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

28279384230 is a wasteful number, since it uses less digits than its factorization.

28279384230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55449800.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 28279384230 in words is "twenty-eight billion, two hundred seventy-nine million, three hundred eighty-four thousand, two hundred thirty".