20189300 has 18 divisors (see below), whose sum is σ = 43810998. Its totient is φ = 8075680.

The previous prime is 20189291. The next prime is 20189303. The reversal of 20189300 is 398102.

It can be written as a sum of positive squares in 3 ways, for example, as 11236 + 20178064 = 106^2 + 4492^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20189303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100847 + ... + 101046.

Almost surely, 2^20189300 is an apocalyptic number.

20189300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20189300 is an abundant number, since it is smaller than the sum of its proper divisors (23621698).

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

20189300 is a wasteful number, since it uses less digits than its factorization.

20189300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201907 (or 201900 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 20189300 is about 4493.2504937962. The cubic root of 20189300 is about 272.2954725981.

The spelling of 20189300 in words is "twenty million, one hundred eighty-nine thousand, three hundred".