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Properties of the Number -20609

Twenty Thousand Six Hundred Nine

Basics

Value: -20610 → -20609 → -20608

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 37 × 557

Divisors: 1, 37, 557, 20609

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -101000010000001

Octal: -50201

Duodecimal: -BB15

Hexadecimal: -5081

Square: 424730881

Square Root: 143.55835050598765

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

Denominators of continued fraction convergents to sqrt(602). A42155
a(n) is the smallest number whose Collatz ('3x+1') trajectory crosses its initial value exactly n times. A301937
Composite hypotenuses of primitive Pythagorean triangles (A120961) that are not circumdiameters of non-Pythagorean primitive Heronian triangles (A285579). A329148
Numbers k such that the continued fraction for sqrt(k) has period 73. A20412
Concatenation of first n terms of A100769 divided by n. A100770
a(n) = a(n-1) + 2·a(n-2) - 2·a(n-3) + a(n-5). A116157
Minimum value unattainable as the sum of 3 attained values of a·b*c with a,b,c 0..n integers. A225265
Number of n X 3 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 4 binary array having a sum of one or less, with rows and columns of the latter in lexicographically nondecreasing order. A227162
Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4. A240758