9818228 has 18 divisors (see below), whose sum is σ = 19987506. Its totient is φ = 4207728.

The previous prime is 9818219. The next prime is 9818251. The reversal of 9818228 is 8228189.

It can be written as a sum of positive squares in only one way, i.e., 5866084 + 3952144 = 2422^2 + 1988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9818191 and 9818200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24851 + ... + 25242.

It is an arithmetic number, because the mean of its divisors is an integer number (1110417).

Almost surely, 2^9818228 is an apocalyptic number.

9818228 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

9818228 is an abundant number, since it is smaller than the sum of its proper divisors (10169278).

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

9818228 is a wasteful number, since it uses less digits than its factorization.

9818228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50111 (or 50102 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 9818228 is about 3133.4051764813. The cubic root of 9818228 is about 214.1300923849.

The spelling of 9818228 in words is "nine million, eight hundred eighteen thousand, two hundred twenty-eight".