28135722774 has 8 divisors (see below), whose sum is σ = 56271445560. Its totient is φ = 9378574256.

The previous prime is 28135722749. The next prime is 28135722793. The reversal of 28135722774 is 47722753182.

It is a sphenic number, since it is the product of 3 distinct primes.

28135722774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2344643559 + ... + 2344643570.

It is an arithmetic number, because the mean of its divisors is an integer number (7033930695).

Almost surely, 2^28135722774 is an apocalyptic number.

28135722774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28135722774 is a wasteful number, since it uses less digits than its factorization.

28135722774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689287134.

The product of its digits is 1317120, while the sum is 48.

The spelling of 28135722774 in words is "twenty-eight billion, one hundred thirty-five million, seven hundred twenty-two thousand, seven hundred seventy-four".