1226188 has 12 divisors (see below), whose sum is σ = 2196040. Its totient is φ = 598752.

The previous prime is 1226179. The next prime is 1226189. The reversal of 1226188 is 8816221.

It is a super-2 number, since 2×1226188² = 3007074022688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1226189) 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 in 3 ways as a sum of consecutive naturals, for example, 3393 + ... + 3736.

2^1226188 is an apocalyptic number.

It is an amenable number.

1226188 is a deficient number, since it is larger than the sum of its proper divisors (969852).

1226188 is a wasteful number, since it uses less digits than its factorization.

1226188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176 (or 7174 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 1226188 is about 1107.3337346979. Note that the first 3 decimals coincide. The cubic root of 1226188 is about 107.0333258642.

The spelling of 1226188 in words is "one million, two hundred twenty-six thousand, one hundred eighty-eight".