11128539 has 4 divisors (see below), whose sum is σ = 14838056. Its totient is φ = 7419024.

The previous prime is 11128531. The next prime is 11128567. The reversal of 11128539 is 93582111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11128539 - 2³ = 11128531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11128531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1854754 + ... + 1854759.

It is an arithmetic number, because the mean of its divisors is an integer number (3709514).

Almost surely, 2^11128539 is an apocalyptic number.

11128539 is a deficient number, since it is larger than the sum of its proper divisors (3709517).

11128539 is an equidigital number, since it uses as much as digits as its factorization.

11128539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709516.

The product of its digits is 2160, while the sum is 30.

The square root of 11128539 is about 3335.9464923766. The cubic root of 11128539 is about 223.2609237796.

The spelling of 11128539 in words is "eleven million, one hundred twenty-eight thousand, five hundred thirty-nine".