Properties of the Number 20066

Twenty Thousand Sixty-Six

Basics

Value: 20065 → 20066 → 20067

Parity: even

Prime: No

Previous Prime: 20063

Next Prime: 20071

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 79 × 127

Divisors: 1, 2, 79, 127, 158, 254, 10033, 20066

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111001100010

Octal: 47142

Duodecimal: B742

Hexadecimal: 4e62

Square: 402644356

Square Root: 141.65450928226747

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

Partial sums of A299277. A299278

Numbers k such that 4^k == 2 (mod k). A130421

Floor(sqrt(3·2ⁿ)). A221718

T(n,k)=Number of nXk binary arrays with each sum of a(1..i,1..j) no greater than i·j/2 and rows and columns in nondecreasing order. A183413

Even numbers k such that 2^2·k == 2 (mod k). A347908

Number of ways to place a non-attacking white and black pawn on n X n chessboard. A35290

a(n) = A115004(2n)/4. A331760

Number of nX4 binary arrays with each sum of a(1..i,1..j) no greater than i·j/2 and rows and columns in nondecreasing order. A183411

Numbers n for which n = σ*(x) = σ*(y), where n = x + y and σ*(n) is the sum of the anti-divisors of n. A227977

Numbers k such that (83·10^k - 29) / 9 is prime. A278418