28190930284 has 24 divisors (see below), whose sum is σ = 53863519248. Its totient is φ = 12803471040.

The previous prime is 28190930263. The next prime is 28190930291. The reversal of 28190930284 is 48203909182.

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, 210727 + ... + 317470.

It is an arithmetic number, because the mean of its divisors is an integer number (2244313302).

Almost surely, 2^28190930284 is an apocalyptic number.

It is an amenable number.

28190930284 is a deficient number, since it is larger than the sum of its proper divisors (25672588964).

28190930284 is a wasteful number, since it uses less digits than its factorization.

28190930284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529425 (or 529423 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 28190930284 in words is "twenty-eight billion, one hundred ninety million, nine hundred thirty thousand, two hundred eighty-four".