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Properties of the Number 27222

Twenty-Seven Thousand Two Hundred Twenty-Two

Basics

Value: 27221 → 27222 → 27223

Parity: even

Prime: No

Previous Prime: 27211

Next Prime: 27239

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13 × 349

Divisors: 1, 2, 3, 6, 13, 26, 39, 78, 349, 698

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110101001010110

Octal: 65126

Duodecimal: 13906

Hexadecimal: 6a56

Square: 741037284

Square Root: 164.99090884045702

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) = prime(n)*prime(n-1) + 1. A23523
a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 3, with initial terms 1,3. A25229
Triangle read by rows: T(n,k) is the number of isomorphism classes of commutative semigroups of order n with k idempotents. A58116
Numbers with digits 2 and 7 only. A284921
Collatz-2 (A063041) trajectory starting at 29. A63044
Number of (w,x,y) with all terms in {0,...,n} and w>=range{w,x,y}. A212968
The sum of all the entries in an n X n Cayley table for multiplication in Zn. A160255
a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-2)*a(2) for n >= 3. A25239
Numbers k such that 2·10k + Rk + 6 is prime, where Rk = 11...1 is the repunit (A002275) of length k. A102949
Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 259", based on the 5-celled von Neumann neighborhood. A271056