18034400 has 36 divisors (see below), whose sum is σ = 44028432. Its totient is φ = 7213440.

The previous prime is 18034397. The next prime is 18034403. The reversal of 18034400 is 443081.

It is an interprime number because it is at equal distance from previous prime (18034397) and next prime (18034403).

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 (18034403) 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 5 ways as a sum of consecutive naturals, for example, 10472 + ... + 12071.

It is an arithmetic number, because the mean of its divisors is an integer number (1223012).

Almost surely, 2^18034400 is an apocalyptic number.

18034400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18034400 is an abundant number, since it is smaller than the sum of its proper divisors (25994032).

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

18034400 is a wasteful number, since it uses less digits than its factorization.

18034400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22563 (or 22550 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 18034400 is about 4246.6928308979. The cubic root of 18034400 is about 262.2409841130.

Adding to 18034400 its reverse (443081), we get a palindrome (18477481).

The spelling of 18034400 in words is "eighteen million, thirty-four thousand, four hundred".