1228170 has 16 divisors (see below), whose sum is σ = 2947680. Its totient is φ = 327504.

The previous prime is 1228163. The next prime is 1228181. The reversal of 1228170 is 718221.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20440 + ... + 20499.

It is an arithmetic number, because the mean of its divisors is an integer number (184230).

2^1228170 is an apocalyptic number.

1228170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228170 is an abundant number, since it is smaller than the sum of its proper divisors (1719510).

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

1228170 is a wasteful number, since it uses less digits than its factorization.

1228170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40949.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1228170 is about 1108.2283158267. The cubic root of 1228170 is about 107.0909640768.

It can be divided in two parts, 12 and 28170, that added together give a palindrome (28182).

The spelling of 1228170 in words is "one million, two hundred twenty-eight thousand, one hundred seventy".