28777250568 has 64 divisors (see below), whose sum is σ = 78558984000. Its totient is φ = 8711982080.

The previous prime is 28777250549. The next prime is 28777250581. The reversal of 28777250568 is 86505277782.

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, 224980 + ... + 328892.

It is an arithmetic number, because the mean of its divisors is an integer number (1227484125).

Almost surely, 2^28777250568 is an apocalyptic number.

It is an amenable number.

28777250568 is an abundant number, since it is smaller than the sum of its proper divisors (49781733432).

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

28777250568 is a wasteful number, since it uses less digits than its factorization.

28777250568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104982 (or 104978 counting only the distinct ones).

The product of its (nonzero) digits is 13171200, while the sum is 57.

The spelling of 28777250568 in words is "twenty-eight billion, seven hundred seventy-seven million, two hundred fifty thousand, five hundred sixty-eight".