20384134 has 8 divisors (see below), whose sum is σ = 31322088. Its totient is φ = 9943440.

The previous prime is 20384113. The next prime is 20384149. The reversal of 20384134 is 43148302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20384099 and 20384108.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 124212 + ... + 124375.

It is an arithmetic number, because the mean of its divisors is an integer number (3915261).

Almost surely, 2^20384134 is an apocalyptic number.

20384134 is a deficient number, since it is larger than the sum of its proper divisors (10937954).

20384134 is a wasteful number, since it uses less digits than its factorization.

20384134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248630.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20384134 is about 4514.8791788928. The cubic root of 20384134 is about 273.1685863584.

The spelling of 20384134 in words is "twenty million, three hundred eighty-four thousand, one hundred thirty-four".