810228117 has 4 divisors (see below), whose sum is σ = 1080304160. Its totient is φ = 540152076.

The previous prime is 810228113. The next prime is 810228131. The reversal of 810228117 is 711822018.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 810228117 - 2² = 810228113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810228113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135038017 + ... + 135038022.

It is an arithmetic number, because the mean of its divisors is an integer number (270076040).

Almost surely, 2^810228117 is an apocalyptic number.

It is an amenable number.

810228117 is a deficient number, since it is larger than the sum of its proper divisors (270076043).

810228117 is a wasteful number, since it uses less digits than its factorization.

810228117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270076042.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 810228117 is about 28464.5062665770. The cubic root of 810228117 is about 932.2572512958.

The spelling of 810228117 in words is "eight hundred ten million, two hundred twenty-eight thousand, one hundred seventeen".