28269681174 has 144 divisors (see below), whose sum is σ = 74591981568. Its totient is φ = 7578342144.

The previous prime is 28269681151. The next prime is 28269681263. The reversal of 28269681174 is 47118696282.

It is a happy number.

It is a super-2 number, since 2×28269681174² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28269681174.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13945549 + ... + 13947575.

It is an arithmetic number, because the mean of its divisors is an integer number (517999872).

Almost surely, 2^28269681174 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28269681174, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37295990784).

28269681174 is an abundant number, since it is smaller than the sum of its proper divisors (46322300394).

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

28269681174 is a wasteful number, since it uses less digits than its factorization.

28269681174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459 (or 2439 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 28269681174 in words is "twenty-eight billion, two hundred sixty-nine million, six hundred eighty-one thousand, one hundred seventy-four".