Properties of the Number -2227

Two Hundred Twenty-Seven

Basics

Value: -2228 → -2227 → -2226

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 17 × 131

Divisors: 1, 17, 131, 2227

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -100010110011

Octal: -4263

Duodecimal: -1357

Hexadecimal: -8b3

Square: 4959529

Square Root: 47.19110085598767

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

Floor(r·a(n-1)) - floor(r·a(n-2)), where r = 3/2, a(0) = 1, a(1) = 1. A275865

G.f. A(x) satisfies: (1 - x) = A(x)*A(x²)²*A(x³)³*A(x⁴)⁴* ... *A(x^k)^k* ... A307656

Numbers k for which 10k+1, 10k+3, 10k+7 and 10k+9 are primes. A7811

The number of face-connected components of polyhedra in the omnitruncated cubic honeycomb up to translation, rotation, and reflection. A384754

T(n,k)=Number of 0..4 colorings of an nx(k+1) array circular in the k+1 direction with new values 0..4 introduced in row major order. A214141

Two-dimensional array read by antidiagonals: T(n,k) = number of arrays of maxima of three adjacent elements of some length n+2 0..k array. A228461

a(n) = n*(8·n-5). A139272

Number of primes <= 3ⁿ. A55729

Number of minimal plane trees with n terminal nodes. A6241

a(n) = ∑_{k <= n/2} binomial(n-2k, 3k). A137356