1223828 has 12 divisors (see below), whose sum is σ = 2254560. Its totient is φ = 579672.

The previous prime is 1223777. The next prime is 1223857. The reversal of 1223828 is 8283221.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1223797 and 1223806.

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, 7976 + ... + 8127.

It is an arithmetic number, because the mean of its divisors is an integer number (187880).

2^1223828 is an apocalyptic number.

It is an amenable number.

1223828 is a deficient number, since it is larger than the sum of its proper divisors (1030732).

1223828 is a wasteful number, since it uses less digits than its factorization.

1223828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16126 (or 16124 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 1223828 is about 1106.2675987301. The cubic root of 1223828 is about 106.9646140303.

The spelling of 1223828 in words is "one million, two hundred twenty-three thousand, eight hundred twenty-eight".