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20337 = 36779
BaseRepresentation
bin100111101110001
31000220020
410331301
51122322
6234053
7113202
oct47561
930806
1020337
1114309
12b929
139345
1475a9
15605c
hex4f71

20337 has 4 divisors (see below), whose sum is σ = 27120. Its totient is φ = 13556.

The previous prime is 20333. The next prime is 20341. The reversal of 20337 is 73302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20333) and next prime (20341).

It is a cyclic number.

It is not a de Polignac number, because 20337 - 22 = 20333 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 20337.

It is not an unprimeable number, because it can be changed into a prime (20333) 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, 3387 + ... + 3392.

It is an arithmetic number, because the mean of its divisors is an integer number (6780).

220337 is an apocalyptic number.

It is an amenable number.

20337 is a deficient number, since it is larger than the sum of its proper divisors (6783).

20337 is an equidigital number, since it uses as much as digits as its factorization.

20337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6782.

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 20337 is about 142.6078539212. The cubic root of 20337 is about 27.2957875667.

Adding to 20337 its reverse (73302), we get a palindrome (93639).

The spelling of 20337 in words is "twenty thousand, three hundred thirty-seven".

Divisors: 1 3 6779 20337