1228904 has 16 divisors (see below), whose sum is σ = 2384100. Its totient is φ = 593152.

The previous prime is 1228891. The next prime is 1228907. The reversal of 1228904 is 4098221.

It can be written as a sum of positive squares in 2 ways, for example, as 1188100 + 40804 = 1090^2 + 202^2 .

It is not an unprimeable number, because it can be changed into a prime (1228907) 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, 2417 + ... + 2880.

2^1228904 is an apocalyptic number.

It is an amenable number.

1228904 is a deficient number, since it is larger than the sum of its proper divisors (1155196).

1228904 is a wasteful number, since it uses less digits than its factorization.

1228904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1228904 is about 1108.5594255609. The cubic root of 1228904 is about 107.1122936739.

The spelling of 1228904 in words is "one million, two hundred twenty-eight thousand, nine hundred four".