28788886650 has 24 divisors (see below), whose sum is σ = 71396439264. Its totient is φ = 7677036400.

The previous prime is 28788886639. The next prime is 28788886739. The reversal of 28788886650 is 5668888782.

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, 95962806 + ... + 95963105.

It is an arithmetic number, because the mean of its divisors is an integer number (2974851636).

Almost surely, 2^28788886650 is an apocalyptic number.

28788886650 is an abundant number, since it is smaller than the sum of its proper divisors (42607552614).

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

28788886650 is a wasteful number, since it uses less digits than its factorization.

28788886650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191925926 (or 191925921 counting only the distinct ones).

The product of its (nonzero) digits is 82575360, while the sum is 66.

The spelling of 28788886650 in words is "twenty-eight billion, seven hundred eighty-eight million, eight hundred eighty-six thousand, six hundred fifty".