Properties of the Number 10989

Ten Thousand Nine Hundred Eighty-Nine

Basics

Value: 10988 → 10989 → 10990

Parity: odd

Prime: No

Previous Prime: 10987

Next Prime: 10993

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 11 × 37

Divisors: 1, 3, 9, 11, 27, 33, 37, 99, 111, 297

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011101101

Octal: 25355

Duodecimal: 6439

Hexadecimal: 2aed

Square: 120758121

Square Root: 104.82843125793688

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

Numbers k such that 9·k = (k written backwards), k > 0. A1232

a(n) = n*(8·n+1). A139275

Numbers k such that k written backwards is a nontrivial multiple of k. A8919

Divisors of 999999. A27892

Numbers k such that 2·A000217(k) + 1 is triangular. A216134

a(n) = ∑_k=1..n floor(n/k) * (-2)^k-1. A344817

Numbers k such that k and 9·k are anagrams. A23093

Non-palindromes in A110751; that is, non-palindromic numbers n such that n and R(n) have the same prime divisors, where R(n) = digit reversal of n. A110819

Numbers which can be expressed as the product of numbers made of only threes. A161141

T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 nXk array. A220406