Properties of the Number 73805

Seventy-Three Thousand Eight Hundred Five

Basics

Value: 73804 → 73805 → 73806

Parity: odd

Prime: No

Previous Prime: 73783

Next Prime: 73819

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 29 × 509

Divisors: 1, 5, 29, 145, 509, 2545, 14761, 73805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10010000001001101

Octal: 220115

Duodecimal: 36865

Hexadecimal: 1204d

Square: 5447178025

Square Root: 271.67075661542964

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

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having x11-x00 less than x10-x01. A251268

Gilda's numbers: numbers k such that if a Fibonacci sequence is formed with first term = a certain absolute value between decimal digits in k (A007953) and second term = sum of decimal digits in k (A040997), then k itself occurs as a term in the sequence. A42947

Fibonacci sequence beginning 14, 9. A206641

Number of (n+1)X(7+1) 0..1 arrays with no 2X2 subblock having x11-x00 less than x10-x01. A251267

Number of (3+1) X (n+1) 0..1 arrays with no 2 X 2 subblock having x11-x00 less than x10-x01. A251270

Numbers k such that 1 + k·R(k) is prime, where R(k) is the reverse of k. A73805