28174228236 has 576 divisors, whose sum is σ = 95511177216. Its totient is φ = 6793113600.

The previous prime is 28174228123. The next prime is 28174228249. The reversal of 28174228236 is 63282247182.

28174228236 is a `hidden beast` number, since 28 + 174 + 228 + 236 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28174228191 and 28174228200.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 385948296 + ... + 385948368.

It is an arithmetic number, because the mean of its divisors is an integer number (165818016).

Almost surely, 2^28174228236 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 28174228236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47755588608).

28174228236 is an abundant number, since it is smaller than the sum of its proper divisors (67336948980).

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

28174228236 is a wasteful number, since it uses less digits than its factorization.

28174228236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 257 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The spelling of 28174228236 in words is "twenty-eight billion, one hundred seventy-four million, two hundred twenty-eight thousand, two hundred thirty-six".