1223836 has 12 divisors (see below), whose sum is σ = 2151520. Its totient is φ = 609120.

The previous prime is 1223777. The next prime is 1223857. The reversal of 1223836 is 6383221.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1223836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520 + ... + 1648.

2^1223836 is an apocalyptic number.

It is an amenable number.

1223836 is a deficient number, since it is larger than the sum of its proper divisors (927684).

1223836 is a wasteful number, since it uses less digits than its factorization.

1223836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404 (or 1402 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 1223836 is about 1106.2712144859. The cubic root of 1223836 is about 106.9648471009.

The spelling of 1223836 in words is "one million, two hundred twenty-three thousand, eight hundred thirty-six".