20252 has 12 divisors (see below), whose sum is σ = 36456.
Its totient is φ = 9840.
The previous prime is 20249. The next prime is 20261. The reversal of 20252 is 25202.
Adding to 20252 its reverse (25202), we get a palindrome (45454).
Subtracting 20252 from its reverse (25202), we obtain a triangular number (4950 = T99).
It can be divided in two parts, 20 and 252, that added together give a palindrome (272).
20252 is nontrivially palindromic in base 11.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203 + ... + 285.
It is an arithmetic number, because the mean of its divisors is an integer number (3038).
220252 is an apocalyptic number.
It is an amenable number.
20252 is a deficient number, since it is larger than the sum of its proper divisors (16204).
20252 is a wasteful number, since it uses less digits than its factorization.
20252 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 148 (or 146 counting only the distinct ones).
The product of its (nonzero) digits is 40, while the sum is 11.
The square root of 20252 is about 142.3095218178.
The cubic root of 20252 is about 27.2577062064.
The spelling of 20252 in words is "twenty thousand, two hundred fifty-two".