Properties of the Number -22020

Twenty-Two Thousand Twenty

Basics

Value: -22021 → -22020 → -22019

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 6

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 5 × 367

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -101011000000100

Octal: -53004

Duodecimal: -108B0

Hexadecimal: -5604

Square: 484880400

Square Root: 148.39137441239635

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

Smallest term of first run of (at least) n consecutive integers which are not squarefree. A45882

Smallest term of first run of exactly n consecutive integers which are not squarefree. A51681

Numbers whose decimal expansion contains only 0's and 2's. A169965

Starts of runs of exactly 6 consecutive nonsquarefree numbers. A49535

Starts for strings of at least five consecutive nonsquarefree numbers. A78144

Reflected tetranacci numbers A073817. A74058

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 (11 maximizes T(1,1)). A233883

Numbers k such that k and k² use only the digits 0, 2, 4, 6 and 8. A136904

Numbers consisting of either 2's and 0's or 5's and 0's. A168541

a(n) = a(n-1) - a(n-2) + a(n-3) + a(n-4), a(0)=4, a(1)=1, a(2)=-1, a(3)=1. A73937