Properties of the Number -23120

Twenty-Three Thousand One Hundred Twenty

Basics

Value: -23121 → -23120 → -23119

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 ⁴ × 5 × 17 ²

Divisors: 1, 2, 4, 5, 8, 10, 16, 17, 20, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101101001010000

Octal: -55120

Duodecimal: -11468

Hexadecimal: -5a50

Square: 534534400

Square Root: 152.0526224699857

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 reversible strings with n-1 beads of 2 colors. 4 beads are black. String is not palindromic. A32091

a(n) = 20·n². A195322

Number of 3-cycles in the n X n rook graph. A288961

Numbers m such that the GCD of the x's that satisfy σ(x) = m is 3. A241648

Maximal coefficient of (1 - x) * (1 - x⁴) * (1 - x⁹) * ... * (1 - x^n²). A369728

a(n) = ∑_{k=0..floor(n/4)} binomial(n,k) * binomial(2·k,n-4·k). A389126

Row sums of correlation triangle for (1+x)³/(1-x). A115293

E.g.f. A(x) satisfies: A( tanh( A(x) ) ) = tan(x). A279837

E.g.f. A(x) satisfies: A( tan( A(x) ) ) = tanh(x). A279839

a(n) = T(n)² - n², where T(n) is a triangular number. A85740