Properties of the Number 20465

Twenty Thousand Four Hundred Sixty-Five

Basics

Value: 20464 → 20465 → 20466

Parity: odd

Prime: No

Previous Prime: 20443

Next Prime: 20477

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 4093

Divisors: 1, 5, 4093, 20465

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111111110001

Octal: 47761

Duodecimal: BA15

Hexadecimal: 4ff1

Square: 418816225

Square Root: 143.05593311708537

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 there is 1 prime between 100·k and 100·k + 99. A186393

T(n,k)=Number of (n+4)X(k+4) 0..2 matrices with each 5X5 subblock idempotent. A224625

Number of minimal dominating sets in the n-prism graph. A290336

Maximal value of sum(p(i)p(i+1),i=1..n), where p(n+1)=p(1), as p ranges over all permutations of {1,2,...,n}. A110610

Numbers k such that the continued fraction for sqrt(k) has period 65. A20404

Number of (n+4)X5 0..2 matrices with each 5X5 subblock idempotent. A224618

Number of (n+4)X6 0..2 matrices with each 5X5 subblock idempotent. A224619

Primes that contain digits 4 and 7 only. A20465