20134511 has 8 divisors (see below), whose sum is σ = 21520080. Its totient is φ = 18771328.

The previous prime is 20134489. The next prime is 20134529. The reversal of 20134511 is 11543102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20134511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20134511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134111) 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, 3716 + ... + 7353.

It is an arithmetic number, because the mean of its divisors is an integer number (2690010).

Almost surely, 2^20134511 is an apocalyptic number.

20134511 is a deficient number, since it is larger than the sum of its proper divisors (1385569).

20134511 is a wasteful number, since it uses less digits than its factorization.

20134511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20134511 is about 4487.1495406327. The cubic root of 20134511 is about 272.0489342107.

Adding to 20134511 its reverse (11543102), we get a palindrome (31677613).

The spelling of 20134511 in words is "twenty million, one hundred thirty-four thousand, five hundred eleven".