13028111 has 4 divisors (see below), whose sum is σ = 13103592. Its totient is φ = 12952632.

The previous prime is 13028027. The next prime is 13028123. The reversal of 13028111 is 11182031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11182031 = 7 ⋅1597433.

It is a cyclic number.

It is not a de Polignac number, because 13028111 - 2¹⁰ = 13027087 is a prime.

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 13028111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13018111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37481 + ... + 37826.

It is an arithmetic number, because the mean of its divisors is an integer number (3275898).

Almost surely, 2^13028111 is an apocalyptic number.

13028111 is a deficient number, since it is larger than the sum of its proper divisors (75481).

13028111 is an equidigital number, since it uses as much as digits as its factorization.

13028111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75480.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 13028111 is about 3609.4474646405. The cubic root of 13028111 is about 235.3028297546.

The spelling of 13028111 in words is "thirteen million, twenty-eight thousand, one hundred eleven".