1222438 has 8 divisors (see below), whose sum is σ = 2095632. Its totient is φ = 523896.

The previous prime is 1222433. The next prime is 1222471. The reversal of 1222438 is 8342221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43645 + ... + 43672.

It is an arithmetic number, because the mean of its divisors is an integer number (261954).

2^1222438 is an apocalyptic number.

1222438 is a deficient number, since it is larger than the sum of its proper divisors (873194).

1222438 is an equidigital number, since it uses as much as digits as its factorization.

1222438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87326.

The product of its digits is 768, while the sum is 22.

The square root of 1222438 is about 1105.6391816501. The cubic root of 1222438 is about 106.9241025808.

Adding to 1222438 its reverse (8342221), we get a palindrome (9564659).

The spelling of 1222438 in words is "one million, two hundred twenty-two thousand, four hundred thirty-eight".