18028234 has 8 divisors (see below), whose sum is σ = 30905568. Its totient is φ = 7726380.

The previous prime is 18028229. The next prime is 18028237. The reversal of 18028234 is 43282081.

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

It is not an unprimeable number, because it can be changed into a prime (18028237) 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 3 ways as a sum of consecutive naturals, for example, 643852 + ... + 643879.

It is an arithmetic number, because the mean of its divisors is an integer number (3863196).

Almost surely, 2^18028234 is an apocalyptic number.

18028234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18028234 is a deficient number, since it is larger than the sum of its proper divisors (12877334).

18028234 is a wasteful number, since it uses less digits than its factorization.

18028234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287740.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18028234 is about 4245.9667921452. The cubic root of 18028234 is about 262.2110937881.

The spelling of 18028234 in words is "eighteen million, twenty-eight thousand, two hundred thirty-four".