28802481228 has 60 divisors (see below), whose sum is σ = 75402176080. Its totient is φ = 9587209248.

The previous prime is 28802481187. The next prime is 28802481229. The reversal of 28802481228 is 82218420882.

28802481228 is a `hidden beast` number, since 288 + 0 + 248 + 122 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28802481229) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 167025 + ... + 292407.

Almost surely, 2^28802481228 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 28802481228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37701088040).

28802481228 is an abundant number, since it is smaller than the sum of its proper divisors (46599694852).

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

28802481228 is a wasteful number, since it uses less digits than its factorization.

28802481228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126108 (or 126097 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 45.

The spelling of 28802481228 in words is "twenty-eight billion, eight hundred two million, four hundred eighty-one thousand, two hundred twenty-eight".