Properties of the Number 11805

Eleven Thousand Eight Hundred Five

Basics

Value: 11804 → 11805 → 11806

Parity: odd

Prime: No

Previous Prime: 11801

Next Prime: 11807

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 787

Divisors: 1, 3, 5, 15, 787, 2361, 3935, 11805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111000011101

Octal: 27035

Duodecimal: 69B9

Hexadecimal: 2e1d

Square: 139358025

Square Root: 108.65081684000356

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

Smallest composite that when added to sum of prime factors reaches a prime after n iterations. A50710

Number of inversion sequences of length n avoiding the consecutive patterns 001 and 012. A328430

Number of weakly perfect graphs on n nodes. A198634

Spontaneous magnetization coefficients for square lattice spin 1 Ising model. A10102

G.f. satisfies A(x) = 1/(1-x)² + x·A(x)⁴. A364621

Triangle read by rows: Related to the Euler numbers. A371994

Numbers k that divide the (left) concatenation of all numbers <= k written in base 11 (most significant digit on left). A29480

Numbers whose set of base-14 digits is {3,4}. A32838

Expansion of (1+x²)²/(1+x²-2x³+x⁴+x⁶). A99493

Binomial transform of A119969. A119970