18828807228 has 432 divisors, whose sum is σ = 62383426560. Its totient is φ = 4733164800.

The previous prime is 18828807203. The next prime is 18828807233. The reversal of 18828807228 is 82270882881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 108836950 + ... + 108837122.

It is an arithmetic number, because the mean of its divisors is an integer number (144406080).

Almost surely, 2^18828807228 is an apocalyptic number.

18828807228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18828807228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31191713280).

18828807228 is an abundant number, since it is smaller than the sum of its proper divisors (43554619332).

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

18828807228 is a wasteful number, since it uses less digits than its factorization.

18828807228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1835008, while the sum is 54.

The spelling of 18828807228 in words is "eighteen billion, eight hundred twenty-eight million, eight hundred seven thousand, two hundred twenty-eight".