Properties of the Number 2170

Two Thousand One Hundred Seventy

Basics

Value: 2169 → 2170 → 2171

Parity: even

Prime: No

Previous Prime: 2161

Next Prime: 2179

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 7 × 31

Divisors: 1, 2, 5, 7, 10, 14, 31, 35, 62, 70

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001111010

Octal: 4172

Duodecimal: 130A

Hexadecimal: 87a

Square: 4708900

Square Root: 46.58325879540846

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

Coordination sequence for "ubt" 3D uniform tiling. A299291

a(n) = largest number of distinct words arising in Post's tag system {00, 1101} applied to a binary word w, over all starting words w of length n, or a(n) = -1 if there is a word w with an unbounded trajectory. A284116

a(n) = 2·n² + 8·n. A67728

Numbers k such that φ(k) = φ(k+2). A1494

Primitive pseudoperfect numbers. A6036

Coefficients of xⁿ in the n-th iteration of (x + x²) for n>=1. A112317

a(n) = n*(3·n + 19)/2. A140675

This table shows the coefficients of sum formulas of n-th Fibonacci numbers (A000045). The k-th row (k>=1) contains T(i,k) for i=1 to k, where k=[2·n+1+(-1)^n-1]/4 and T(i,k) satisfies F(n)= ∑_i=1..k T(i,k) * n^k-i/(k-1)!. A99731

Numbers n such that p(6n) is prime, where p(n) is the number of partitions of n. A111036

Numbers k such that k² is a sum of consecutive cubes larger than 1. A126200