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Properties of the Number 22278

Twenty-Two Thousand Two Hundred Seventy-Eight

Basics

Value: 22277 → 22278 → 22279

Parity: even

Prime: No

Previous Prime: 22277

Next Prime: 22279

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

Today's Target

2196 Try Today's Challenge

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

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
G.f. satisfies A(x) = exp( 3 * ∑k>=1 (-1)k+1 * A(-xk) * xk/k ). A363475
a(n) = floor(∑k=n3..(n+1)3 k1/3). A374384
a(n) = digit reversal of A103741(n). A103763