28550878348 has 12 divisors (see below), whose sum is σ = 50000757912. Its totient is φ = 14264947520.

The previous prime is 28550878339. The next prime is 28550878381. The reversal of 28550878348 is 84387805582.

It is a junction number, because it is equal to n+sod(n) for n = 28550878292 and 28550878301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2616790 + ... + 2627677.

It is an arithmetic number, because the mean of its divisors is an integer number (4166729826).

Almost surely, 2^28550878348 is an apocalyptic number.

It is an amenable number.

28550878348 is a deficient number, since it is larger than the sum of its proper divisors (21449879564).

28550878348 is a wasteful number, since it uses less digits than its factorization.

28550878348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5245832 (or 5245830 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 58.

The spelling of 28550878348 in words is "twenty-eight billion, five hundred fifty million, eight hundred seventy-eight thousand, three hundred forty-eight".