28776998334 has 16 divisors (see below), whose sum is σ = 65775996288. Its totient is φ = 8221999512.

The previous prime is 28776998329. The next prime is 28776998347. The reversal of 28776998334 is 43389967782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342583272 + ... + 342583355.

It is an arithmetic number, because the mean of its divisors is an integer number (4110999768).

Almost surely, 2^28776998334 is an apocalyptic number.

28776998334 is an abundant number, since it is smaller than the sum of its proper divisors (36998997954).

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

28776998334 is a wasteful number, since it uses less digits than its factorization.

28776998334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685166639.

The product of its digits is 109734912, while the sum is 66.

The spelling of 28776998334 in words is "twenty-eight billion, seven hundred seventy-six million, nine hundred ninety-eight thousand, three hundred thirty-four".