Properties of the Number 20732

Twenty Thousand Seven Hundred Thirty-Two

Basics

Value: 20731 → 20732 → 20733

Parity: even

Prime: No

Previous Prime: 20731

Next Prime: 20743

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 71 × 73

Divisors: 1, 2, 4, 71, 73, 142, 146, 284, 292, 5183

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000011111100

Octal: 50374

Duodecimal: BBB8

Hexadecimal: 50fc

Square: 429815824

Square Root: 143.98611044125056

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

a(n) = 12ⁿ - n. A24141

Greatest number m such that the fractional part of (π-2)^A153717(n) <= 1/m. A153721

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one. A238054

Number of 3 X 3 integer matrices with elements in the range [ -n,n ] which represent a three-fold rotation. A53172

Sequence is {a(1,n)}, where a(m,n) is defined at sequence A111518. A111519

a(n) = 16·n² - 4. A158443

a(n) = n·prime(prime(n)) - prime(n)². A230098

Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one. A238050

Number of nX3 0..1 arrays with every element unequal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero. A304014

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero. A304019