Properties of the Number -260720

Two Hundred Sixty Thousand Seven Hundred Twenty

Basics

Value: -260721 → -260720 → -260719

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁴ × 5 × 3259

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111111101001110000

Octal: -775160

Duodecimal: -106A68

Hexadecimal: -3fa70

Square: 67974918400

Square Root: 510.60748133962943

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 intransitive (or alternating, or Stanley) trees: vertices are [0,n] and for no i<j<k are both (i,j) and (j,k) edges. A7889

a(n) = A026626(2·n, n). A26627

a(n) = A026626(n, floor(n/2)). A26632

Solution to the Dancing School Problem with 7 girls and n+7 boys: f(7,n). A79912

Solution to the Dancing School Problem with n girls and n+7 boys: f(n,7). A79926

First term of n-th difference sequence of (round(k*φ)), φ = golden ratio = (1+sqrt(5))/2, k >= 0. A325844