18890200 has 96 divisors (see below), whose sum is σ = 51068160. Its totient is φ = 6364800.

The previous prime is 18890177. The next prime is 18890203. The reversal of 18890200 is 209881.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18890203) 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 23 ways as a sum of consecutive naturals, for example, 144135 + ... + 144265.

It is an arithmetic number, because the mean of its divisors is an integer number (531960).

Almost surely, 2^18890200 is an apocalyptic number.

18890200 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 18890200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25534080).

18890200 is an abundant number, since it is smaller than the sum of its proper divisors (32177960).

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

18890200 is a wasteful number, since it uses less digits than its factorization.

18890200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 248 counting only the distinct ones).

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

The square root of 18890200 is about 4346.2857706322. The cubic root of 18890200 is about 266.3251530963.

The spelling of 18890200 in words is "eighteen million, eight hundred ninety thousand, two hundred".