Properties of the Number 22172

Twenty-Two Thousand One Hundred Seventy-Two

Basics

Value: 22171 → 22172 → 22173

Parity: even

Prime: No

Previous Prime: 22171

Next Prime: 22189

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 23 × 241

Divisors: 1, 2, 4, 23, 46, 92, 241, 482, 964, 5543

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011010011100

Octal: 53234

Duodecimal: 109B8

Hexadecimal: 569c

Square: 491597584

Square Root: 148.90265276347498

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

Triangle T(n,k) giving number of loopless matroids of rank k on n labeled points (n >= 0, 0 <= k <= n). A58710

Triangle T(n,k) giving the number of loopless matroids of rank k on n labeled points (n >= 1, 1 <= k <= n). A58711

Number of ordered triples (w,x,y) with all terms in {1,...,n} and w²<=x²+y². A211634

Triangle read by rows. Number T(n, k) of partitions of the multiset [1, 1, 1, 1, 1, 2, 2, 2, 2, 2, ..., n, n, n, n, n] into k nonempty subsets, for 5 <= k <= 5n. A360039

Number of loopless matroids of rank 3 on n labeled points. A58715

Numbers k such that 247·2^k+1 is prime. A32500

Number of 0..n arrays x(0..6) of 7 elements with zero 4th differences. A200274

a(1)=1, a(2)=2, a(3)=3, a(4)=4, a(5)=5, a(n)=5·a(n-5)+4·a(n-4)+3·a(n-3)+2·a(n-2)+a(n-1). A286902

Numbers whose base-3 representation has exactly 10 runs. A43590

Numbers k such that number of runs in the base 3 representation of k is congruent to 1 mod 9. A43807