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Properties of the Number 28968

Twenty-Eight Thousand Nine Hundred Sixty-Eight

Basics

Value: 28967 → 28968 → 28969

Parity: even

Prime: No

Previous Prime: 28961

Next Prime: 28979

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 3 × 3 × 17 × 71

Divisors: 1, 2, 3, 4, 6, 8, 12, 17, 24, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000100101000

Octal: 70450

Duodecimal: 14920

Hexadecimal: 7128

Square: 839145024

Square Root: 170.19988249114627

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

Number of 2n-bead black-white reversible complementable necklaces with n black beads. A6840
Numbers k such that A(k+1) = A(k) + 1, where A() = A005101() are the abundant numbers. A169822
a(n) = 25·n2 + 2·n. A154377
a(n) = 1728·n - 408. A157266
Central terms of the triangle in A074911. A225621
Number of (n+1) X (4+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235013
Number of (n+1) X (7+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235016
a(n) = [xn] 2 / (1 + x*(2·x + 3) + sqrt((x + 1)*(1 - 3·x))). Alternating row sums of A379907. A379824
arcsin(sinh(x)+sin(x))=2·x+8/3!*x3+290/5!*x5+28968/7!*x7... A13027
a(n) = T(n,m) + T(n,m+1) + ... + T(n,n), m=[ (n+1)/2 ], T given by A026747. A26869