1228144 has 20 divisors (see below), whose sum is σ = 2421720. Its totient is φ = 603200.

The previous prime is 1228133. The next prime is 1228147. The reversal of 1228144 is 4418221.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228147) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 294 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (121086).

2^1228144 is an apocalyptic number.

It is an amenable number.

1228144 is a deficient number, since it is larger than the sum of its proper divisors (1193576).

1228144 is a wasteful number, since it uses less digits than its factorization.

1228144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368 (or 1362 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 1228144 is about 1108.2165853298. The cubic root of 1228144 is about 107.0902083766.

The spelling of 1228144 in words is "one million, two hundred twenty-eight thousand, one hundred forty-four".