18889300 has 36 divisors (see below), whose sum is σ = 41872320. Its totient is φ = 7393120.

The previous prime is 18889291. The next prime is 18889303. The reversal of 18889300 is 398881.

It is a self number, because there is not a number n which added to its sum of digits gives 18889300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18889303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2691 + ... + 6709.

It is an arithmetic number, because the mean of its divisors is an integer number (1163120).

Almost surely, 2^18889300 is an apocalyptic number.

18889300 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 18889300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20936160).

18889300 is an abundant number, since it is smaller than the sum of its proper divisors (22983020).

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

18889300 is a wasteful number, since it uses less digits than its factorization.

18889300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080 (or 4073 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18889300 is about 4346.1822327187. The cubic root of 18889300 is about 266.3209234526.

The spelling of 18889300 in words is "eighteen million, eight hundred eighty-nine thousand, three hundred".