Properties of the Number -165600

One Hundred Sixty-Five Thousand Six Hundred

Basics

Value: -165601 → -165600 → -165599

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁵ × 3 ² × 5 ² × 23

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000011011100000

Octal: -503340

Duodecimal: -7BA00

Hexadecimal: -286e0

Square: 27423360000

Square Root: 406.9397989875161

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

Triangle T, read by rows, where g.f. of row n of matrix power Tⁿ = (n³ + y)*y^n-1 for n>=0. A152285

Column 1 of triangle A152285. A152287

a(n) = n² * (n² - 1)/2. A83374

a(n) = ∑_k=0..n binomial(k+6,6) * binomial(2·k,2·n-2·k). A382473

Positive numbers m such that m² - 1 divides 2^m - 1. A247219

Triangular numbers whose reverse is a square (possibly with fewer digits). A179889

Row sums of the triangle A045975. A204558

Number of 2 X 2 matrices with all elements in {0,1,...,n} and positive odd determinant. A210373

Triangular numbers that are the product of a triangular number and an oblong number. A253652

Triangular numbers n such that each decimal digit of n is equal to the difference of at least two other digits of n. A255917