28863691116 has 48 divisors (see below), whose sum is σ = 75682731264. Its totient is φ = 8494998336.

The previous prime is 28863691099. The next prime is 28863691159. The reversal of 28863691116 is 61119636882.

It is a super-2 number, since 2×28863691116² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4018666 + ... + 4025841.

It is an arithmetic number, because the mean of its divisors is an integer number (1576723568).

Almost surely, 2^28863691116 is an apocalyptic number.

28863691116 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28863691116 is an abundant number, since it is smaller than the sum of its proper divisors (46819040148).

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

28863691116 is a wasteful number, since it uses less digits than its factorization.

28863691116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044550 (or 8044548 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The spelling of 28863691116 in words is "twenty-eight billion, eight hundred sixty-three million, six hundred ninety-one thousand, one hundred sixteen".