Properties of the Number 18273

Eighteen Thousand Two Hundred Seventy-Three

Basics

Value: 18272 → 18273 → 18274

Parity: odd

Prime: No

Previous Prime: 18269

Next Prime: 18287

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 6091

Divisors: 1, 3, 6091, 18273

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100011101100001

Octal: 43541

Duodecimal: A6A9

Hexadecimal: 4761

Square: 333902529

Square Root: 135.1776608763445

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

T(n,k) is the number permutations p of [n] that are k-dist-increasing but not j-dist-increasing for any j<k, where p is j-dist-increasing if j>=0 and p(i)<p(i+j) for all i in [n-j]; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A370507

Triangle T(n,k) giving number of immersions of the oriented circle into the oriented plane with n double points and index k, k = -n-1, -n+1, ..., n-1, n+1. A8985

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A299607

Record indices of A135727(n) = max{ A001281^k(n);k=0,1,2,3... } (3x-1 problem). A135728

Number of partitions into non-integral powers. A397

Where records appear in A109734. A109740

If x² + 2·y² is prime for all positive integers·and y with m = x·y then m is in the sequence. A287799

Number of partitions of n with up to eight distinct kinds of 1. A320695

a(n) = [ a(n-1)/a(1) ] + [ a(n-3)/a(3) ] + [ a(n-5)/a(5) ] + ..., for n >= 3. A22866

Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7. A252380