20189834 has 16 divisors (see below), whose sum is σ = 34769088. Its totient is φ = 8613312.

The previous prime is 20189831. The next prime is 20189843. The reversal of 20189834 is 43898102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20189794 and 20189803.

It is not an unprimeable number, because it can be changed into a prime (20189831) 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, 2 + ... + 6354.

It is an arithmetic number, because the mean of its divisors is an integer number (2173068).

Almost surely, 2^20189834 is an apocalyptic number.

20189834 is a deficient number, since it is larger than the sum of its proper divisors (14579254).

20189834 is a wasteful number, since it uses less digits than its factorization.

20189834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6589.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20189834 is about 4493.3099158638. The cubic root of 20189834 is about 272.2978732840.

The spelling of 20189834 in words is "twenty million, one hundred eighty-nine thousand, eight hundred thirty-four".