Properties of the Number -41780

Forty-One Thousand Seven Hundred Eighty

Basics

Value: -41781 → -41780 → -41779

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 2089

Divisors: 1, 2, 4, 5, 10, 20, 2089, 4178, 8356, 10445

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010001100110100

Octal: -121464

Duodecimal: -20218

Hexadecimal: -a334

Square: 1745568400

Square Root: 204.40156555173445

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

a(n) = ∑_k=0..n (-1)^k * binomial(4·k,n-k) * Catalan(k). A360085

Numbers n such that n through n+6 are divisible by the same number of distinct primes. A45935

a(n) is the smallest positive integer m such that 2ⁿ appears as the denominator of a convergent to sqrt(m). A338308

Number of (5+1)X(n+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically. A253702

Numbers k such that k!6 - 27 is prime, where k!6 is the sextuple factorial number (A085158). A289698

a(n) is the smallest number that starts a run of exactly n consecutive integers that are neither primes nor semiprimes. A343729