Properties of the Number 20601

Twenty Thousand Six Hundred One

Basics

Value: 20600 → 20601 → 20602

Parity: odd

Prime: No

Previous Prime: 20599

Next Prime: 20611

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 7 × 109

Divisors: 1, 3, 7, 9, 21, 27, 63, 109, 189, 327

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000001111001

Octal: 50171

Duodecimal: BB09

Hexadecimal: 5079

Square: 424401201

Square Root: 143.53048456686824

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: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

G.f. satisfies: A(x) = 1 + x/A(-x·A(x)⁹)³. A213100

Numbers k such that sopfr(k + ω(k)) = sopfr(k), where sopfr(i) = A001414(i) and ω(i) = A001221(i). A187878

Numbers such that k is the altitude of a Heronian triangle with sides m-13, m, m+13. A293846

Numbers k that divide 5^k + 4^k. A45590

100-gonal numbers: a(n) = 98·n*(n-1)/2 + n. A261276

Numbers k that divide the k-th central Delannoy number. A372901

Number of partitions satisfying cn(0,5) <= cn(1,5) + cn(2,5) + cn(3,5) and cn(0,5) <= cn(4,5) + cn(2,5) + cn(3,5). A39845

Smallest nonempty set S containing prime divisors of 5k+9 for each k in S. A20601