20184934 has 16 divisors (see below), whose sum is σ = 37748736. Its totient is φ = 7864200.

The previous prime is 20184929. The next prime is 20184959. The reversal of 20184934 is 43948102.

It is a junction number, because it is equal to n+sod(n) for n = 20184896 and 20184905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65382 + ... + 65689.

It is an arithmetic number, because the mean of its divisors is an integer number (2359296).

Almost surely, 2^20184934 is an apocalyptic number.

20184934 is a deficient number, since it is larger than the sum of its proper divisors (17563802).

20184934 is a wasteful number, since it uses less digits than its factorization.

20184934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131091.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 20184934 is about 4492.7646277098. The cubic root of 20184934 is about 272.2758429306.

The spelling of 20184934 in words is "twenty million, one hundred eighty-four thousand, nine hundred thirty-four".