18982000 has 40 divisors (see below), whose sum is σ = 45903312. Its totient is φ = 7592000.

The previous prime is 18981997. The next prime is 18982001. The reversal of 18982000 is 28981.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 18982000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18982001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2746 + ... + 6745.

Almost surely, 2^18982000 is an apocalyptic number.

18982000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18982000 is an abundant number, since it is smaller than the sum of its proper divisors (26921312).

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

18982000 is an equidigital number, since it uses as much as digits as its factorization.

18982000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9514 (or 9498 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 18982000 is about 4356.8337126863. The cubic root of 18982000 is about 266.7558729329.

The spelling of 18982000 in words is "eighteen million, nine hundred eighty-two thousand".