20152 has 16 divisors (see below), whose sum is σ = 41400. Its totient is φ = 9120.
The previous prime is 20149. The next prime is 20161. The reversal of 20152 is 25102.
It is a super-2 number, since 2×201522 = 812206208, which contains 22 as substring.
It is an Ulam number.
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, 27 + ... + 202.
220152 is an apocalyptic number.
20152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is an amenable number.
20152 is an abundant number, since it is smaller than the sum of its proper divisors (21248).
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 (20700).
20152 is a wasteful number, since it uses less digits than its factorization.
20152 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 246 (or 242 counting only the distinct ones).
The product of its (nonzero) digits is 20, while the sum is 10.
The square root of 20152 is about 141.9577401905. The cubic root of 20152 is about 27.2127679388.
Adding to 20152 its reverse (25102), we get a palindrome (45254).
Subtracting 20152 from its reverse (25102), we obtain a triangular number (4950 = T99).
It can be divided in two parts, 201 and 52, that added together give a triangular number (253 = T22).
The spelling of 20152 in words is "twenty thousand, one hundred fifty-two".
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