1128512 has 56 divisors (see below), whose sum is σ = 2804160. Its totient is φ = 437760.

The previous prime is 1128509. The next prime is 1128521. The reversal of 1128512 is 2158211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4814 + ... + 5042.

2^1128512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1402080).

1128512 is an abundant number, since it is smaller than the sum of its proper divisors (1675648).

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

1128512 is a wasteful number, since it uses less digits than its factorization.

1128512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 249 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 1128512 is about 1062.3144543872. The cubic root of 1128512 is about 104.1123047193.

The spelling of 1128512 in words is "one million, one hundred twenty-eight thousand, five hundred twelve".