28776652250 has 32 divisors (see below), whose sum is σ = 57038718672. Its totient is φ = 10833561600.

The previous prime is 28776652243. The next prime is 28776652319. The reversal of 28776652250 is 5225667782.

It can be written as a sum of positive squares in 8 ways, for example, as 11689718161 + 17086934089 = 108119^2 + 130717^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

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, 3381239 + ... + 3389738.

Almost surely, 2^28776652250 is an apocalyptic number.

28776652250 is a deficient number, since it is larger than the sum of its proper divisors (28262066422).

28776652250 is a wasteful number, since it uses less digits than its factorization.

28776652250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771011 (or 6771001 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 28776652250 in words is "twenty-eight billion, seven hundred seventy-six million, six hundred fifty-two thousand, two hundred fifty".