1228188 has 24 divisors (see below), whose sum is σ = 3086608. Its totient is φ = 377856.

The previous prime is 1228187. The next prime is 1228193. The reversal of 1228188 is 8818221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3781 + ... + 4092.

2^1228188 is an apocalyptic number.

It is an amenable number.

1228188 is an abundant number, since it is smaller than the sum of its proper divisors (1858420).

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

1228188 is a wasteful number, since it uses less digits than its factorization.

1228188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893 (or 7891 counting only the distinct ones).

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

The square root of 1228188 is about 1108.2364368672. The cubic root of 1228188 is about 107.0914872475.

The spelling of 1228188 in words is "one million, two hundred twenty-eight thousand, one hundred eighty-eight".