28481228116 has 12 divisors (see below), whose sum is σ = 54373253760. Its totient is φ = 12946012760.

The previous prime is 28481228093. The next prime is 28481228117. The reversal of 28481228116 is 61182218482.

It is a super-2 number, since 2×28481228116² (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 (28481228117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323650276 + ... + 323650363.

It is an arithmetic number, because the mean of its divisors is an integer number (4531104480).

Almost surely, 2^28481228116 is an apocalyptic number.

It is an amenable number.

28481228116 is a deficient number, since it is larger than the sum of its proper divisors (25892025644).

28481228116 is a wasteful number, since it uses less digits than its factorization.

28481228116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647300654 (or 647300652 counting only the distinct ones).

The product of its digits is 98304, while the sum is 43.

The spelling of 28481228116 in words is "twenty-eight billion, four hundred eighty-one million, two hundred twenty-eight thousand, one hundred sixteen".