1227198 has 32 divisors (see below), whose sum is σ = 2856960. Its totient is φ = 344160.

The previous prime is 1227181. The next prime is 1227241. The reversal of 1227198 is 8917221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2323 + ... + 2801.

It is an arithmetic number, because the mean of its divisors is an integer number (89280).

2^1227198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428480).

1227198 is an abundant number, since it is smaller than the sum of its proper divisors (1629762).

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

1227198 is a wasteful number, since it uses less digits than its factorization.

1227198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552.

The product of its digits is 2016, while the sum is 30.

The square root of 1227198 is about 1107.7896912320. The cubic root of 1227198 is about 107.0627052609.

The spelling of 1227198 in words is "one million, two hundred twenty-seven thousand, one hundred ninety-eight".