1222626 has 8 divisors (see below), whose sum is σ = 2445264. Its totient is φ = 407540.

The previous prime is 1222603. The next prime is 1222633. The reversal of 1222626 is 6262221.

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

1222626 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

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 3 ways as a sum of consecutive naturals, for example, 101880 + ... + 101891.

It is an arithmetic number, because the mean of its divisors is an integer number (305658).

2^1222626 is an apocalyptic number.

1222626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1222626 is a wasteful number, since it uses less digits than its factorization.

1222626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203776.

The product of its digits is 576, while the sum is 21.

The square root of 1222626 is about 1105.7241970763. The cubic root of 1222626 is about 106.9295836225.

Adding to 1222626 its reverse (6262221), we get a palindrome (7484847).

The spelling of 1222626 in words is "one million, two hundred twenty-two thousand, six hundred twenty-six".