1128904 has 32 divisors (see below), whose sum is σ = 2548800. Its totient is φ = 457920.

The previous prime is 1128901. The next prime is 1128917. The reversal of 1128904 is 4098211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1128901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (79650).

2^1128904 is an apocalyptic number.

1128904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274400).

1128904 is an abundant number, since it is smaller than the sum of its proper divisors (1419896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1128904 is a wasteful number, since it uses less digits than its factorization.

1128904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1089 counting only the distinct ones).

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

The square root of 1128904 is about 1062.4989411759. The cubic root of 1128904 is about 104.1243581427.

The spelling of 1128904 in words is "one million, one hundred twenty-eight thousand, nine hundred four".