18230128 has 40 divisors (see below), whose sum is σ = 40691840. Its totient is φ = 7750080.

The previous prime is 18230111. The next prime is 18230129. The reversal of 18230128 is 82103281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230129) 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 7 ways as a sum of consecutive naturals, for example, 14983 + ... + 16153.

It is an arithmetic number, because the mean of its divisors is an integer number (1017296).

Almost surely, 2^18230128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18230128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20345920).

18230128 is an abundant number, since it is smaller than the sum of its proper divisors (22461712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18230128 is a wasteful number, since it uses less digits than its factorization.

18230128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 18230128 is about 4269.6753974980. The cubic root of 18230128 is about 263.1862762035.

It can be divided in two parts, 182301 and 28, that added together give a square (182329 = 427²).

The spelling of 18230128 in words is "eighteen million, two hundred thirty thousand, one hundred twenty-eight".