1222284 has 24 divisors (see below), whose sum is σ = 3259648. Its totient is φ = 349200.

The previous prime is 1222279. The next prime is 1222307. The reversal of 1222284 is 4822221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1222284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7192 + ... + 7359.

2^1222284 is an apocalyptic number.

1222284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1222284 is an abundant number, since it is smaller than the sum of its proper divisors (2037364).

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

1222284 is a wasteful number, since it uses less digits than its factorization.

1222284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14565 (or 14563 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 1222284 is about 1105.5695364833. The cubic root of 1222284 is about 106.9196123726.

The spelling of 1222284 in words is "one million, two hundred twenty-two thousand, two hundred eighty-four".