28002881116 has 24 divisors (see below), whose sum is σ = 56010005856. Its totient is φ = 12000325440.

The previous prime is 28002881111. The next prime is 28002881119. The reversal of 28002881116 is 61118820082.

It is a happy number.

It is a super-2 number, since 2×28002881116² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28002881111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447210 + ... + 505966.

It is an arithmetic number, because the mean of its divisors is an integer number (2333750244).

Almost surely, 2^28002881116 is an apocalyptic number.

It is an amenable number.

28002881116 is an abundant number, since it is smaller than the sum of its proper divisors (28007124740).

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

28002881116 is a wasteful number, since it uses less digits than its factorization.

28002881116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75789 (or 75787 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 37.

The spelling of 28002881116 in words is "twenty-eight billion, two million, eight hundred eighty-one thousand, one hundred sixteen".