8228181 has 16 divisors (see below), whose sum is σ = 12329856. Its totient is φ = 4842816.

The previous prime is 8228173. The next prime is 8228183. The reversal of 8228181 is 1818228.

It is not a de Polignac number, because 8228181 - 2³ = 8228173 is a prime.

It is a super-2 number, since 2×8228181² = 135405925137522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8228183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3690 + ... + 5483.

It is an arithmetic number, because the mean of its divisors is an integer number (770616).

Almost surely, 2^8228181 is an apocalyptic number.

It is an amenable number.

8228181 is a deficient number, since it is larger than the sum of its proper divisors (4101675).

8228181 is a wasteful number, since it uses less digits than its factorization.

8228181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212.

The product of its digits is 2048, while the sum is 30.

The square root of 8228181 is about 2868.4806082663. The cubic root of 8228181 is about 201.8837108006.

The spelling of 8228181 in words is "eight million, two hundred twenty-eight thousand, one hundred eighty-one".