28417685112 has 128 divisors (see below), whose sum is σ = 83881915200. Its totient is φ = 8883302400.

The previous prime is 28417685083. The next prime is 28417685113. The reversal of 28417685112 is 21158671482.

28417685112 is a `hidden beast` number, since 28 + 41 + 76 + 8 + 511 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28417685113) 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, 1018062 + ... + 1045602.

Almost surely, 2^28417685112 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 28417685112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41940957600).

28417685112 is an abundant number, since it is smaller than the sum of its proper divisors (55464230088).

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

28417685112 is a wasteful number, since it uses less digits than its factorization.

28417685112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27854 (or 27844 counting only the distinct ones).

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

The spelling of 28417685112 in words is "twenty-eight billion, four hundred seventeen million, six hundred eighty-five thousand, one hundred twelve".