1284222 has 16 divisors (see below), whose sum is σ = 2584080. Its totient is φ = 425472.

The previous prime is 1284211. The next prime is 1284223. The reversal of 1284222 is 2224821.

It is a happy number.

It is a super-2 number, since 2×1284222² = 3298452290568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284223) 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, 604 + ... + 1712.

It is an arithmetic number, because the mean of its divisors is an integer number (161505).

2^1284222 is an apocalyptic number.

1284222 is an abundant number, since it is smaller than the sum of its proper divisors (1299858).

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

1284222 is a wasteful number, since it uses less digits than its factorization.

1284222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

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

The square root of 1284222 is about 1133.2351918291. The cubic root of 1284222 is about 108.6959514751.

The spelling of 1284222 in words is "one million, two hundred eighty-four thousand, two hundred twenty-two".