Properties of the Number 11281

Eleven Thousand Two Hundred Eighty-One

Basics

Value: 11280 → 11281 → 11282

Parity: odd

Prime: No

Previous Prime: 11279

Next Prime: 11287

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 29 × 389

Divisors: 1, 29, 389, 11281

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10110000010001

Octal: 26021

Duodecimal: 6641

Hexadecimal: 2c11

Square: 127260961

Square Root: 106.21205204683694

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

Partial sums of A299255. A299261

Fundamental discriminants of real quadratic number fields with class number 10. A218160

Odd composite integers m such that A087130(m) == 5 (mod m). A335671

Number of partitions of n into as many primes as nonprimes. A155515

E.g.f.: ∑_n>=0 exp(n·2ⁿ*x) * xⁿ/n!. A244820

Total number of λ-parking functions induced by all partitions of n into distinct parts. A265202

a(n)/A002939(n+1) is the Kirchhoff index of the join of the disjoint union of two complete graphs on n vertices with the empty graph on n+1 vertices. A338109

Numbers k such that the continued fraction of (1 + sqrt(k))/2 has period 15. A146338

Numbers m such that m = p² + k², with p > 0, where p = A007954(m) = the product of digits of m. A334557

a(n) = 4ⁿ - n·3^n-1. A380651