18122300 has 36 divisors (see below), whose sum is σ = 44945040. Its totient is φ = 6213120.

The previous prime is 18122243. The next prime is 18122309. The reversal of 18122300 is 322181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18122309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12245 + ... + 13644.

Almost surely, 2^18122300 is an apocalyptic number.

18122300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18122300 is an abundant number, since it is smaller than the sum of its proper divisors (26822740).

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

18122300 is a wasteful number, since it uses less digits than its factorization.

18122300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25910 (or 25903 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 18122300 is about 4257.0294807530. The cubic root of 18122300 is about 262.6663495863. Note that the first 3 decimals are identical.

Adding to 18122300 its reverse (322181), we get a palindrome (18444481).

The spelling of 18122300 in words is "eighteen million, one hundred twenty-two thousand, three hundred".