20134520 has 32 divisors (see below), whose sum is σ = 51775200. Its totient is φ = 6903168.

The previous prime is 20134489. The next prime is 20134529. The reversal of 20134520 is 2543102.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 35675 + ... + 36234.

It is an arithmetic number, because the mean of its divisors is an integer number (1617975).

Almost surely, 2^20134520 is an apocalyptic number.

20134520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134520 is an abundant number, since it is smaller than the sum of its proper divisors (31640680).

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

20134520 is a wasteful number, since it uses less digits than its factorization.

20134520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71927 (or 71923 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20134520 is about 4487.1505434964. The cubic root of 20134520 is about 272.0489747454.

Adding to 20134520 its reverse (2543102), we get a palindrome (22677622).

The spelling of 20134520 in words is "twenty million, one hundred thirty-four thousand, five hundred twenty".