20134539 has 6 divisors (see below), whose sum is σ = 29083236. Its totient is φ = 13423020.

The previous prime is 20134529. The next prime is 20134553. The reversal of 20134539 is 93543102.

20134539 is a `hidden beast` number, since 201 + 3 + 453 + 9 = 666.

It is not a de Polignac number, because 20134539 - 2¹¹ = 20132491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20134529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1118577 + ... + 1118594.

It is an arithmetic number, because the mean of its divisors is an integer number (4847206).

Almost surely, 2^20134539 is an apocalyptic number.

20134539 is a deficient number, since it is larger than the sum of its proper divisors (8948697).

20134539 is a wasteful number, since it uses less digits than its factorization.

20134539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237177 (or 2237174 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20134539 is about 4487.1526606524. The cubic root of 20134539 is about 272.0490603186.

The spelling of 20134539 in words is "twenty million, one hundred thirty-four thousand, five hundred thirty-nine".