18028135 has 8 divisors (see below), whose sum is σ = 21667680. Its totient is φ = 14399904.

The previous prime is 18028121. The next prime is 18028147. The reversal of 18028135 is 53182081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18028135 - 2¹¹ = 18026087 is a prime.

It is a congruent number.

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, 1206 + ... + 6124.

It is an arithmetic number, because the mean of its divisors is an integer number (2708460).

Almost surely, 2^18028135 is an apocalyptic number.

18028135 is a deficient number, since it is larger than the sum of its proper divisors (3639545).

18028135 is an equidigital number, since it uses as much as digits as its factorization.

18028135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18028135 is about 4245.9551340070. The cubic root of 18028135 is about 262.2106138197.

The spelling of 18028135 in words is "eighteen million, twenty-eight thousand, one hundred thirty-five".