18054400 has 216 divisors, whose sum is σ = 56774144. Its totient is φ = 5529600.

The previous prime is 18054371. The next prime is 18054401. The reversal of 18054400 is 445081.

It is a super-2 number, since 2×18054400² = 651922718720000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18054401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 582385 + ... + 582415.

Almost surely, 2^18054400 is an apocalyptic number.

18054400 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 18054400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28387072).

18054400 is an abundant number, since it is smaller than the sum of its proper divisors (38719744).

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

18054400 is a wasteful number, since it uses less digits than its factorization.

18054400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 18054400 is about 4249.0469519646. The cubic root of 18054400 is about 262.3378893248.

Adding to 18054400 its reverse (445081), we get a palindrome (18499481).

The spelling of 18054400 in words is "eighteen million, fifty-four thousand, four hundred".