20514 has 16 divisors (see below), whose sum is σ = 44352. Its totient is φ = 6288.

The previous prime is 20509. The next prime is 20521. The reversal of 20514 is 41502.

20514 = 2⁶ + 3⁶ + ... + 5⁶.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 20514.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 20514.

It is an unprimeable number.

20514 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54 + ... + 209.

It is an arithmetic number, because the mean of its divisors is an integer number (2772).

2²⁰⁵¹⁴ is an apocalyptic number.

20514 is an abundant number, since it is smaller than the sum of its proper divisors (23838).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22176).

20514 is a wasteful number, since it uses less digits than its factorization.

20514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 20514 is about 143.2270924092. The cubic root of 20514 is about 27.3747471881.

Subtracting from 20514 its sum of digits (12), we obtain a palindrome (20502).

The spelling of 20514 in words is "twenty thousand, five hundred fourteen".