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Properties of the Number -209664

Two Hundred Nine Thousand Six Hundred Sixty-Four

Basics

Value: -209665 → -209664 → -209663

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 8 × 3 2 × 7 × 13

Divisors: 1, 2, 3, 4, 6, 7, 8, 9, 12, 13

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -110011001100000000

Octal: -631400

Duodecimal: -A1400

Hexadecimal: -33300

Square: 43958992896

Square Root: 457.8908166801339

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

Number of the Lipschitz quaternions in a reduced system modulo n. A227499
Number of orthogonal 3 X 3 matrices over the ring Z/nZ. A264083
Number of ways to place n nonattacking composite pieces rook + rider[2,4] on an n X n chessboard. A189855
a(n) is the least number with exactly n divisors of the form 5·k+1. A364586
a(n) is the least number with exactly n divisors of the form 5·k+4. A364600
Number of 3 X 3 symmetric matrices over Z(n) having determinant 1. A115224
Prime shadows of colossally abundant numbers, A004490. A353561
a(n) = binomial(n+2,3)*43. A141478
Expansion of e.g.f. (1/x) * SeriesReversion( x*(1 + x3*log(1-x)) ). A370995
Numbers n such that uphi(uphi(n)) = n/2. A71008