Properties of the Number -229

Two Hundred Twenty-Nine

Basics

Value: -230 → -229 → -228

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 229

Divisors: 1, 229

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11100101

Octal: -345

Duodecimal: -171

Hexadecimal: -e5

Square: 52441

Square Root: 15.132745950421556

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

Coefficients of numerator polynomials of g.f.s for a certain necklace problem involving prime numbers. A103728

Expansion of (1-x-x^N)/((1-x)(1-x²)(1-x³)...(1-x^N)) for N = 6. A60025

Triangle read by rows: coefficients of polynomials arising from the recurrence A[n](x) = A[n-1]'(x)/(1-x) with A[0] = exp(x). A144505

a(n) = -n² + 9·n + 23. A126719

Triangle of coefficients of Gaussian polynomials [2n+3,3]_q represented as finite sum of terms (1+q²)^k*q^g-k, where k = 0,1,...,g with g=3n. A267120

Expansion of ∏_k>=1 (1 - k^k*x^k). A292312

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of ∏_j>=1 (1-j^k·j*x^j) in powers of x. A294653

Expansion of ∏_k>=1 (1 + x^k/(1 + x)). A307602

Riordan's general Eulerian recursion: T(n, k) = (k+2)*T(n-1, k) + (n-k-1) * T(n-1, k-1) with T(n,1) = 1, T(n,n) = (-1)^n-1. A157013

a(0)=0; thereafter a(n) = a(n-1)+n if the (n-1)st digit of the sequence is even, otherwise a(n) = a(n-1)-n. A309216