Properties of the Number 22090

Twenty-Two Thousand Ninety

Basics

Value: 22089 → 22090 → 22091

Parity: even

Prime: No

Previous Prime: 22079

Next Prime: 22091

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 47 ²

Divisors: 1, 2, 5, 10, 47, 94, 235, 470, 2209, 4418

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011001001010

Octal: 53112

Duodecimal: 1094A

Hexadecimal: 564a

Square: 487968100

Square Root: 148.62705002791384

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 (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8. A252053

Floor of the expected value of number of trials until exactly four cells are empty in a random distribution of n balls in n cells. A210115

Ulam's spiral (SSW spoke). A143838

Smallest number such that GCD of EulerPhi of 2 consecutive integer equals 2n. A63444

Expansion of (b(q⁶) * c(q⁶)) / (b(q³) * c(q³)) in powers of q where b(), c() are cubic AGM θ functions. A102315

McKay-Thompson series of class 38a for Monster. A58658

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8. A252046

Fibonacci sequence beginning 0, 7. A22090

Array read by antidiagonals: T(n,k) (n>=1, k>=1) = number of ways to select four points from an n X k grid so that they form a convex quadrilateral. A334711

Variation of the Sisyphus sequence A350877: the same rules apply except that each time a(n) is divided by a prime the dividing prime is incremented to the next prime. A351102