18230000 has 50 divisors (see below), whose sum is σ = 44160864. Its totient is φ = 7288000.

The previous prime is 18229999. The next prime is 18230029. The reversal of 18230000 is 3281.

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 9089 + ... + 10911.

Almost surely, 2^18230000 is an apocalyptic number.

18230000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18230000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22080432).

18230000 is an abundant number, since it is smaller than the sum of its proper divisors (25930864).

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

18230000 is an equidigital number, since it uses as much as digits as its factorization.

18230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1830 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 18230000 is about 4269.6604080418. The cubic root of 18230000 is about 263.1856602283.

Adding to 18230000 its reverse (3281), we get a palindrome (18233281).

The spelling of 18230000 in words is "eighteen million, two hundred thirty thousand".