18328100 has 36 divisors (see below), whose sum is σ = 45455424. Its totient is φ = 6283680.

The previous prime is 18328097. The next prime is 18328109. The reversal of 18328100 is 182381.

It is a super-2 number, since 2×18328100² = 671838499220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18328109) 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 11 ways as a sum of consecutive naturals, for example, 12392 + ... + 13791.

Almost surely, 2^18328100 is an apocalyptic number.

18328100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18328100 is an abundant number, since it is smaller than the sum of its proper divisors (27127324).

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

18328100 is a wasteful number, since it uses less digits than its factorization.

18328100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26204 (or 26197 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 18328100 is about 4281.1330275991. The cubic root of 18328100 is about 263.6569043197.

The spelling of 18328100 in words is "eighteen million, three hundred twenty-eight thousand, one hundred".