18104100 has 144 divisors (see below), whose sum is σ = 61746048. Its totient is φ = 4008960.

The previous prime is 18104089. The next prime is 18104101. The reversal of 18104100 is 140181.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 18104100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18104101) 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 47 ways as a sum of consecutive naturals, for example, 77584 + ... + 77816.

It is an arithmetic number, because the mean of its divisors is an integer number (428792).

Almost surely, 2^18104100 is an apocalyptic number.

18104100 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 18104100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30873024).

18104100 is an abundant number, since it is smaller than the sum of its proper divisors (43641948).

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

18104100 is a wasteful number, since it uses less digits than its factorization.

18104100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 18104100 is about 4254.8913029595. The cubic root of 18104100 is about 262.5783892870.

Adding to 18104100 its reverse (140181), we get a palindrome (18244281).

The spelling of 18104100 in words is "eighteen million, one hundred four thousand, one hundred".