18053300 has 18 divisors (see below), whose sum is σ = 39175878. Its totient is φ = 7221280.

The previous prime is 18053293. The next prime is 18053309. The reversal of 18053300 is 335081.

It can be written as a sum of positive squares in 3 ways, for example, as 2149156 + 15904144 = 1466^2 + 3988^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90167 + ... + 90366.

Almost surely, 2^18053300 is an apocalyptic number.

18053300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18053300 is an abundant number, since it is smaller than the sum of its proper divisors (21122578).

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

18053300 is a wasteful number, since it uses less digits than its factorization.

18053300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180547 (or 180540 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 18053300 is about 4248.9175092016. The cubic root of 18053300 is about 262.3325613985.

Adding to 18053300 its reverse (335081), we get a palindrome (18388381).

The spelling of 18053300 in words is "eighteen million, fifty-three thousand, three hundred".