Properties of the Number -78880

Seventy-Eight Thousand Eight Hundred Eighty

Basics

Value: -78881 → -78880 → -78879

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 5 × 17 × 29

Divisors: 1, 2, 4, 5, 8, 10, 16, 17, 20, 29

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011010000100000

Octal: -232040

Duodecimal: -39794

Hexadecimal: -13420

Square: 6222054400

Square Root: 280.8558349046713

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

T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction. A221483

Triangle read by rows: T(n,k) = number of connected matchings with n crossings and k chords, in a disk, k=2..n+1. A232223

Triangle of Touchard's chord enumerating polynomial coefficients [x^k] P_n(x). A322456

Number of n X 3 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction. A221478

a(n) = 4·n*(n² - 3·n - 1)/3. A275876

a(n) = least positive integer m such that when m*(m+1) is written in base n, it does not contain the digits 0 or n-1 and contains every single digit from 1 to n-2 exactly once, or 0 if no such number exists. A382055

Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction. A221489