Properties of the Number 20683

Twenty Thousand Six Hundred Eighty-Three

Basics

Value: 20682 → 20683 → 20684

Parity: odd

Prime: No

Previous Prime: 20681

Next Prime: 20693

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 13 × 37 × 43

Divisors: 1, 13, 37, 43, 481, 559, 1591, 20683

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000011001011

Octal: 50313

Duodecimal: BB77

Hexadecimal: 50cb

Square: 427786489

Square Root: 143.81585448065175

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: Yes

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Taxi-cab numbers: sums of 2 cubes in more than 1 way. A1235

Cubefree taxi-cab numbers. A272885

Numbers that are the sum of 2 cubes in more than 1 way (primitive solutions). A18850

Numbers which are the sum of two positive cubes and divisible by 37. A102618

Sum of two (possibly negative) coprime cubes in at least 2 ways, but not the sum of 2 noncoprime cubes. A293648

Numbers that are the sum of two positive cubes in exactly two ways. A343708

Positive numbers that are the sum of two (possibly negative) cubes in at least 2 ways (primitive solutions). A293647

Taxi-cab numbers (A001235) that are the product of exactly three (not necessarily distinct) primes. A272935

Numbers whose 4th power can be expressed as the sum of two positive cubes in more than one way. A51388

33-gonal numbers: n(31n-29)/2. A98923