Properties of the Number -228241

Two Hundred Twenty-Eight Thousand Two Hundred Forty-One

Basics

Value: -228242 → -228241 → -228240

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 13 × 97 × 181

Divisors: 1, 13, 97, 181, 1261, 2353, 17557, 228241

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -110111101110010001

Octal: -675621

Duodecimal: -B0101

Hexadecimal: -37b91

Square: 52093954081

Square Root: 477.74574828040073

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

Composite numbers k such that 2^k-2 and 3^k-3 are both divisible by k and k is not a Carmichael number (A002997). A153513

Numbers m such that exactly half of the a such that 0<a<m and (a,m)=1 satisfy a^m-1 == 1 (mod m). A191311

Odd composite integers m such that F(m)² == 1 (mod m) and L(m) == 1 (mod m), where F(m) and L(m) are the m-th Fibonacci and Lucas numbers, respectively. A337625

Numbers in A191311 but not in A129521. A191592

Numbers that are both Fermat pseudoprimes to base 2 (A001567) and Bruckman-Lucas pseudoprimes (A005845). A329240

a(n) = 16·n³ - 36·n² + 30·n - 9. A341043