28485716256 has 384 divisors, whose sum is σ = 93594009600. Its totient is φ = 8375685120.

The previous prime is 28485716227. The next prime is 28485716261. The reversal of 28485716256 is 65261758482.

28485716256 is a `hidden beast` number, since 2 + 8 + 4 + 8 + 5 + 7 + 1 + 625 + 6 = 666.

It is a super-2 number, since 2×28485716256² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 63 ways as a sum of consecutive naturals, for example, 28743921 + ... + 28744911.

It is an arithmetic number, because the mean of its divisors is an integer number (243734400).

Almost surely, 2^28485716256 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 28485716256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46797004800).

28485716256 is an abundant number, since it is smaller than the sum of its proper divisors (65108293344).

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

28485716256 is a wasteful number, since it uses less digits than its factorization.

28485716256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1135 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 28485716256 in words is "twenty-eight billion, four hundred eighty-five million, seven hundred sixteen thousand, two hundred fifty-six".