28176655836 has 96 divisors (see below), whose sum is σ = 76118999040. Its totient is φ = 7945795584.

The previous prime is 28176655813. The next prime is 28176655841. The reversal of 28176655836 is 63855667182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3116170 + ... + 3125198.

It is an arithmetic number, because the mean of its divisors is an integer number (792906240).

Almost surely, 2^28176655836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28176655836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38059499520).

28176655836 is an abundant number, since it is smaller than the sum of its proper divisors (47942343204).

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

28176655836 is a wasteful number, since it uses less digits than its factorization.

28176655836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9523 (or 9521 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 28176655836 in words is "twenty-eight billion, one hundred seventy-six million, six hundred fifty-five thousand, eight hundred thirty-six".