18028934 has 16 divisors (see below), whose sum is σ = 33716736. Its totient is φ = 7024200.

The previous prime is 18028931. The next prime is 18028939. The reversal of 18028934 is 43982081.

It is a happy number.

It is a super-2 number, since 2×18028934² = 650084922352712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18028894 and 18028903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18028931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58382 + ... + 58689.

It is an arithmetic number, because the mean of its divisors is an integer number (2107296).

Almost surely, 2^18028934 is an apocalyptic number.

18028934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18028934 is a deficient number, since it is larger than the sum of its proper divisors (15687802).

18028934 is a wasteful number, since it uses less digits than its factorization.

18028934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117091.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18028934 is about 4246.0492225126. The cubic root of 18028934 is about 262.2144874537.

The spelling of 18028934 in words is "eighteen million, twenty-eight thousand, nine hundred thirty-four".