228881826 has 24 divisors (see below), whose sum is σ = 496686684. Its totient is φ = 76174560.

The previous prime is 228881801. The next prime is 228881831. The reversal of 228881826 is 628188822.

228881826 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 228161025 + 720801 = 15105^2 + 849^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2280 + ... + 21516.

Almost surely, 2^228881826 is an apocalyptic number.

228881826 is an abundant number, since it is smaller than the sum of its proper divisors (267804858).

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

228881826 is a wasteful number, since it uses less digits than its factorization.

228881826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19906 (or 19903 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The square root of 228881826 is about 15128.8408676937. The cubic root of 228881826 is about 611.6980600798.

The spelling of 228881826 in words is "two hundred twenty-eight million, eight hundred eighty-one thousand, eight hundred twenty-six".