Properties of the Number -169840

One Hundred Sixty-Nine Thousand Eight Hundred Forty

Basics

Value: -169841 → -169840 → -169839

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 × 11 × 193

Divisors: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -101001011101110000

Octal: -513560

Duodecimal: -82354

Hexadecimal: -29770

Square: 28845625600

Square Root: 412.1164883864755

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

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards. A233801

Trajectory of 270 under repeated application of k -> (φ(k)+σ(k))/2. A291789

Number of (w,x,y,z) with all terms in {0,...,n} and max{w,x,y,z}>2·min{w,x,y,z}. A212743

p-INVERT of (0,1,0,1,0,1,...), where p(S) = (1 - S)⁵. A291225

Number of (n+2)X(1+2) 0..3 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards. A233796

Number of (1+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards. A233802

T(n,n-1), array T as in A047120. A47123

Expansion of polynomial N₅ in Formula (10) in the reference. A145107