Properties of the Number 47805

Forty-Seven Thousand Eight Hundred Five

Basics

Value: 47804 → 47805 → 47806

Parity: odd

Prime: No

Previous Prime: 47797

Next Prime: 47807

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 3187

Divisors: 1, 3, 5, 15, 3187, 9561, 15935, 47805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1011101010111101

Octal: 135275

Duodecimal: 237B9

Hexadecimal: babd

Square: 2285318025

Square Root: 218.64354552558828

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

Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1), U=(1,2), or d=(1,-1) and have k triple descents (i.e., ddd's). A108443

Numbers k such that 33·2^k+1 is prime. A32366

Duplicate of A008695. A47805