Properties of the Number 20340

Twenty Thousand Three Hundred Forty

Basics

Value: 20339 → 20340 → 20341

Parity: even

Prime: No

Previous Prime: 20333

Next Prime: 20341

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5 × 113

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111101110100

Octal: 47564

Duodecimal: B930

Hexadecimal: 4f74

Square: 413715600

Square Root: 142.61837188805654

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 R, read by rows, where column k of R equals column 0 of P^2k+1 where P=A135880. A135894

Number of ways to place non-intersecting diagonals in convex (n+2)-gon so as to create no quadrilaterals. A54515

Sorted positions of first appearances in A368109 (number of ways to choose a binary index of each binary index). A368112

T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order. A222378

Triangle, read by rows, equal to P⁵, where triangle P = A135880. A135892

Triangle, read by rows equal to the matrix product R^-1·Q, where Q = A135885 and R = A135894; R^-1·Q equals triangle R shifted down one row. A135900

Occurrences of most frequently occurring number in 1-to-n 5-dimensional multiplication table. A57344

Coordination sequence for 4-dimensional primitive di-isohexagonal orthogonal lattice. A8530

Sum of squares of first n quarter-squares (A002620). A59859

Number of nX4 0..3 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order. A222375