1228912 has 20 divisors (see below), whose sum is σ = 2410560. Its totient is φ = 606848.

The previous prime is 1228907. The next prime is 1228919. The reversal of 1228912 is 2198221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (120528).

2^1228912 is an apocalyptic number.

It is an amenable number.

1228912 is a deficient number, since it is larger than the sum of its proper divisors (1181648).

1228912 is an equidigital number, since it uses as much as digits as its factorization.

1228912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 954 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 1228912 is about 1108.5630338416. The cubic root of 1228912 is about 107.1125261022.

The spelling of 1228912 in words is "one million, two hundred twenty-eight thousand, nine hundred twelve".