1223404 has 24 divisors (see below), whose sum is σ = 2635808. Its totient is φ = 483840.

The previous prime is 1223381. The next prime is 1223419. The reversal of 1223404 is 4043221.

1223404 is nontrivially palindromic in base 12.

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 7 ways as a sum of consecutive naturals, for example, 1317 + ... + 2044.

2^1223404 is an apocalyptic number.

1223404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1223404 is an abundant number, since it is smaller than the sum of its proper divisors (1412404).

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

1223404 is a wasteful number, since it uses less digits than its factorization.

1223404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385 (or 3383 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1223404 is about 1106.0759467595. The cubic root of 1223404 is about 106.9522598338.

Adding to 1223404 its reverse (4043221), we get a palindrome (5266625).

The spelling of 1223404 in words is "one million, two hundred twenty-three thousand, four hundred four".