28141817256 has 128 divisors (see below), whose sum is σ = 93223526400. Its totient is φ = 7690921920.

The previous prime is 28141817251. The next prime is 28141817257. The reversal of 28141817256 is 65271814182.

28141817256 is a `hidden beast` number, since 281 + 41 + 81 + 7 + 256 = 666.

It is not an unprimeable number, because it can be changed into a prime (28141817251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369840 + ... + 439391.

It is an arithmetic number, because the mean of its divisors is an integer number (728308800).

Almost surely, 2^28141817256 is an apocalyptic number.

It is an amenable number.

28141817256 is an abundant number, since it is smaller than the sum of its proper divisors (65081709144).

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

28141817256 is a wasteful number, since it uses less digits than its factorization.

28141817256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809276 (or 809266 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The spelling of 28141817256 in words is "twenty-eight billion, one hundred forty-one million, eight hundred seventeen thousand, two hundred fifty-six".