1122638 has 12 divisors (see below), whose sum is σ = 1851360. Its totient is φ = 510180.

The previous prime is 1122623. The next prime is 1122643. The reversal of 1122638 is 8362211.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2078 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (154280).

2^1122638 is an apocalyptic number.

1122638 is a deficient number, since it is larger than the sum of its proper divisors (728722).

1122638 is a wasteful number, since it uses less digits than its factorization.

1122638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663 (or 4652 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1122638 is about 1059.5461292459. The cubic root of 1122638 is about 103.9313526268.

Adding to 1122638 its reverse (8362211), we get a palindrome (9484849).

The spelling of 1122638 in words is "one million, one hundred twenty-two thousand, six hundred thirty-eight".