28956426850 has 24 divisors (see below), whose sum is σ = 58001951700. Its totient is φ = 10691603520.

The previous prime is 28956426827. The next prime is 28956426887. The reversal of 28956426850 is 5862465982.

It can be written as a sum of positive squares in 6 ways, for example, as 1681574049 + 27274852801 = 41007^2 + 165151^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28956426791 and 28956426800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22273525 + ... + 22274824.

Almost surely, 2^28956426850 is an apocalyptic number.

28956426850 is an abundant number, since it is smaller than the sum of its proper divisors (29045524850).

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

28956426850 is a wasteful number, since it uses less digits than its factorization.

28956426850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44548374 (or 44548369 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 28956426850 in words is "twenty-eight billion, nine hundred fifty-six million, four hundred twenty-six thousand, eight hundred fifty".