811200228 has 12 divisors (see below), whose sum is σ = 1892800560. Its totient is φ = 270400072.

The previous prime is 811200227. The next prime is 811200241. The reversal of 811200228 is 822002118.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 811200198 and 811200207.

It is not an unprimeable number, because it can be changed into a prime (811200227) 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, 33799998 + ... + 33800021.

It is an arithmetic number, because the mean of its divisors is an integer number (157733380).

Almost surely, 2^811200228 is an apocalyptic number.

It is an amenable number.

811200228 is an abundant number, since it is smaller than the sum of its proper divisors (1081600332).

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

811200228 is a wasteful number, since it uses less digits than its factorization.

811200228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67600026 (or 67600024 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 811200228 is about 28481.5769928563. The cubic root of 811200228 is about 932.6299427674.

The spelling of 811200228 in words is "eight hundred eleven million, two hundred thousand, two hundred twenty-eight".