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20238 = 233373
BaseRepresentation
bin100111100001110
31000202120
410330032
51121423
6233410
7113001
oct47416
930676
1020238
1114229
12b866
13929a
147538
155ee3
hex4f0e

20238 has 8 divisors (see below), whose sum is σ = 40488. Its totient is φ = 6744.

The previous prime is 20233. The next prime is 20249. The reversal of 20238 is 83202.

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

20238 is an admirable number.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1681 + ... + 1692.

It is an arithmetic number, because the mean of its divisors is an integer number (5061).

220238 is an apocalyptic number.

20238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (20244).

20238 is a wasteful number, since it uses less digits than its factorization.

20238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20238 is about 142.2603247571. The cubic root of 20238 is about 27.2514237676.

The spelling of 20238 in words is "twenty thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 3373 6746 10119 20238