28260302884 has 12 divisors (see below), whose sum is σ = 53951487408. Its totient is φ = 12845592200.

The previous prime is 28260302881. The next prime is 28260302899. The reversal of 28260302884 is 48820306282.

It is a self number, because there is not a number n which added to its sum of digits gives 28260302884.

It is not an unprimeable number, because it can be changed into a prime (28260302881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321139762 + ... + 321139849.

It is an arithmetic number, because the mean of its divisors is an integer number (4495957284).

Almost surely, 2^28260302884 is an apocalyptic number.

It is an amenable number.

28260302884 is a deficient number, since it is larger than the sum of its proper divisors (25691184524).

28260302884 is a wasteful number, since it uses less digits than its factorization.

28260302884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642279626 (or 642279624 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 28260302884 in words is "twenty-eight billion, two hundred sixty million, three hundred two thousand, eight hundred eighty-four".