Properties of the Number 20104

Twenty Thousand One Hundred Four

Basics

Value: 20103 → 20104 → 20105

Parity: even

Prime: No

Previous Prime: 20101

Next Prime: 20107

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 7 × 359

Divisors: 1, 2, 4, 7, 8, 14, 28, 56, 359, 718

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111010001000

Octal: 47210

Duodecimal: B774

Hexadecimal: 4e88

Square: 404170816

Square Root: 141.7885749981288

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

Multiples of 7 whose sum of digits is equal to 7. A63416

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 0 vertically. A207774

T(n,k)=Number of nXk 0..1 arrays with no element equal to a strict majority of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A279158

Number of cycles of length 3 in the queen graph associated with an n X n chessboard. A144298

Triangle read by rows: number of permutations of length n that require exactly k removals from the beginning to become heapable. A390368

Number of initial odd numbers in class n of the iterated φ function. A92878

Expansion of 1/(1 - x*(1 + x)³)². A382613

Number of intermediate configurations needed to be stored to calculate the number of ways in which a 9 X n grid can be tiled with triominoes. A215827

Solution of the complementary equation a(n) = 4·a(n-2) + b(n-1), where a(0) = 1, a(1) = 3, b(0) = 2, and (a(n)) and (b(n)) are increasing complementary sequences. A295061

Positive numbers k such that k and 2·k are anagrams in base 8 (written in base 8). A23073