Properties of the Number 20144

Twenty Thousand One Hundred Forty-Four

Basics

Value: 20143 → 20144 → 20145

Parity: even

Prime: No

Previous Prime: 20143

Next Prime: 20147

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 1259

Divisors: 1, 2, 4, 8, 16, 1259, 2518, 5036, 10072, 20144

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 100111010110000

Octal: 47260

Duodecimal: B7A8

Hexadecimal: 4eb0

Square: 405780736

Square Root: 141.92955999368138

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

Number of partitions of n where the difference between consecutive parts is at most 4. A238864

a(n) = T(9,n), array T given by A048505. A195855

Numbers n whose sum of divisors and number of divisors are both triangular numbers. A70996

Expansion of (1-5·x+6·x²-x³)/((1-x)*(1-2·x)*(1-3·x)*(1-4·x)). A246986

Number of length 6+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third. A248439

Expansion of -x²/(136·x²+2·x-1). A140898

Array read by antidiagonals: T(n,k) is the number of k-tuples of permutations of [n] which commute, divided by n!, n >= 0, k >= 1. A362826

Pseudoprimes to base 16. A20144

Number of (n+2)X5 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order. A204393