8231228 has 6 divisors (see below), whose sum is σ = 14404656. Its totient is φ = 4115612.

The previous prime is 8231227. The next prime is 8231231. The reversal of 8231228 is 8221328.

It is a super-2 number, since 2×8231228² = 135506228775968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8231197 and 8231206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8231221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028900 + ... + 1028907.

It is an arithmetic number, because the mean of its divisors is an integer number (2400776).

Almost surely, 2^8231228 is an apocalyptic number.

It is an amenable number.

8231228 is a deficient number, since it is larger than the sum of its proper divisors (6173428).

8231228 is a wasteful number, since it uses less digits than its factorization.

8231228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057811 (or 2057809 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 8231228 is about 2869.0116765186. The cubic root of 8231228 is about 201.9086277598.

The spelling of 8231228 in words is "eight million, two hundred thirty-one thousand, two hundred twenty-eight".