1128087 has 20 divisors (see below), whose sum is σ = 1776280. Its totient is φ = 711504.

The previous prime is 1128037. The next prime is 1128089. The reversal of 1128087 is 7808211.

It is not a de Polignac number, because 1128087 - 2¹⁴ = 1111703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1128087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128089) 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 19 ways as a sum of consecutive naturals, for example, 1173 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (88814).

2^1128087 is an apocalyptic number.

1128087 is a deficient number, since it is larger than the sum of its proper divisors (648193).

1128087 is an equidigital number, since it uses as much as digits as its factorization.

1128087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 1128087 is about 1062.1144006179. The cubic root of 1128087 is about 104.0992334404.

The spelling of 1128087 in words is "one million, one hundred twenty-eight thousand, eighty-seven".