20134536 has 16 divisors (see below), whose sum is σ = 50336400. Its totient is φ = 6711504.

The previous prime is 20134529. The next prime is 20134553. The reversal of 20134536 is 63543102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 838939 = 20134536 / (2 + 0 + 1 + 3 + 4 + 5 + 3 + 6).

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, 419446 + ... + 419493.

It is an arithmetic number, because the mean of its divisors is an integer number (3146025).

Almost surely, 2^20134536 is an apocalyptic number.

It is an amenable number.

20134536 is an abundant number, since it is smaller than the sum of its proper divisors (30201864).

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

20134536 is a wasteful number, since it uses less digits than its factorization.

20134536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838948 (or 838944 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20134536 is about 4487.1523263647. The cubic root of 20134536 is about 272.0490468071.

Adding to 20134536 its reverse (63543102), we get a palindrome (83677638).

The spelling of 20134536 in words is "twenty million, one hundred thirty-four thousand, five hundred thirty-six".