1151128 has 32 divisors (see below), whose sum is σ = 2396160. Its totient is φ = 514080.

The previous prime is 1151113. The next prime is 1151141. The reversal of 1151128 is 8211511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9001 + ... + 9127.

It is an arithmetic number, because the mean of its divisors is an integer number (74880).

2^1151128 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 1151128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198080).

1151128 is an abundant number, since it is smaller than the sum of its proper divisors (1245032).

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

1151128 is a wasteful number, since it uses less digits than its factorization.

1151128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 243 counting only the distinct ones).

The product of its digits is 80, while the sum is 19.

The square root of 1151128 is about 1072.9063332836. The cubic root of 1151128 is about 104.8031990166.

Adding to 1151128 its reverse (8211511), we get a palindrome (9362639).

The spelling of 1151128 in words is "one million, one hundred fifty-one thousand, one hundred twenty-eight".