1018228 has 6 divisors (see below), whose sum is σ = 1781906. Its totient is φ = 509112.

The previous prime is 1018223. The next prime is 1018247. The reversal of 1018228 is 8228101.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 138384 = 938^2 + 372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1018199 and 1018208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018223) by changing a digit.

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 as a sum of consecutive naturals, namely, 127275 + ... + 127282.

2^1018228 is an apocalyptic number.

It is an amenable number.

1018228 is a deficient number, since it is larger than the sum of its proper divisors (763678).

1018228 is a wasteful number, since it uses less digits than its factorization.

1018228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254561 (or 254559 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1018228 is about 1009.0728417711. The cubic root of 1018228 is about 100.6039451595.

The spelling of 1018228 in words is "one million, eighteen thousand, two hundred twenty-eight".