Properties of the Number 10881

Ten Thousand Eight Hundred Eighty-One

Basics

Value: 10880 → 10881 → 10882

Parity: odd

Prime: No

Previous Prime: 10867

Next Prime: 10883

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 13 × 31

Divisors: 1, 3, 9, 13, 27, 31, 39, 93, 117, 279

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010000001

Octal: 25201

Duodecimal: 6369

Hexadecimal: 2a81

Square: 118396161

Square Root: 104.31203190428226

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

a(n) = n*(n²+3·n-1)/3. A84990

Number of singular 2 X 2 matrices having all elements in {-n,...,n}. A209981

First differences of A014292. A104862

Result of using the positive integers 1,2,3,... as coefficients in an infinite polynomial series in·and then expressing this series as ∏_k>=1 (1+a(k)x^k). A147654

a(n) = ∑_d∣n σ(n/d)*d³. A27847

Numbers k such that the decimal number concat(4,k) is a square. A273359

Number of ON cells at n-th stage in simple 2-dimensional cellular automaton (see Comments lines for definition). A256530

a(n) = ∑_d∣n d³*A000593(n/d). A288419

Partial sums of A140091. A267370

a(n) = ∑_k=1..n τ(gcd(k,n)^gcd(k,n)), where τ(n) is the number of divisors of n. A344224