Properties of the Number -22278

Twenty-Two Thousand Two Hundred Seventy-Eight

Basics

Value: -22279 → -22278 → -22277

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 47 × 79

Divisors: 1, 2, 3, 6, 47, 79, 94, 141, 158, 237

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011100000110

Octal: -53406

Duodecimal: -10A86

Hexadecimal: -5706

Square: 496309284

Square Root: 149.2581656057718

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

G.f. satisfies A(x) = exp( 3 * ∑_k>=1 (-1)^k+1 * A(-x^k) * x^k/k ). A363475

Triangle T, read by rows, equal to the matrix cube of triangle A113106, which satisfies the recurrence: A113106(n,k) = [A113106⁵](n-1,k-1) + [A113106⁵](n-1,k). A113110

Averages of twin prime pairs which are a sum of averages of two consecutive twin prime pairs. A160916

Number of obtuse triangles on a centered hexagonal grid of size n. A241226

Sum of the squares of the quadratic nonresidues of prime(n). A125617

Squarefree numbers n such that n² + 1 and n² - 1 are semiprime. A268697

Number of compositions (ordered partitions) of n into an even number of cubes. A339420

Averages k of twin primes such that the sum (with multiplicity) of prime factors of k-1, k and k+1 is prime. A340060

a(n) = floor(∑_{k=n³..(n+1)³} k^1/3). A374384

a(n) = digit reversal of A103741(n). A103763