20036534 has 16 divisors (see below), whose sum is σ = 34407936. Its totient is φ = 8572200.

The previous prime is 20036531. The next prime is 20036561. The reversal of 20036534 is 43563002.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20036531) 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, 11969 + ... + 13539.

It is an arithmetic number, because the mean of its divisors is an integer number (2150496).

Almost surely, 2^20036534 is an apocalyptic number.

20036534 is a deficient number, since it is larger than the sum of its proper divisors (14371402).

20036534 is a wasteful number, since it uses less digits than its factorization.

20036534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20036534 is about 4476.2187167296. The cubic root of 20036534 is about 271.6069420106.

Adding to 20036534 its reverse (43563002), we get a palindrome (63599536).

The spelling of 20036534 in words is "twenty million, thirty-six thousand, five hundred thirty-four".