Properties of the Number -203841

Two Hundred Three Thousand Eight Hundred Forty-One

Basics

Value: -203842 → -203841 → -203840

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 × 29 × 71

Divisors: 1, 3, 9, 11, 29, 33, 71, 87, 99, 213

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110001110001000001

Octal: -616101

Duodecimal: -99B69

Hexadecimal: -31c41

Square: 41551153281

Square Root: 451.48754135634795

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) = the least integer that is polygonal in exactly n ways. A63778

Numbers m such that 3·m+1 and 8·m+1 are both squares. A245031

Triangular numbers which have one or more occurrences of exactly six different digits. A241789

a(n) = (n-2)⁴ - a(n-1) - a(n-2), with a(1) = a(2) = 0. A152729

Least triangular n-gonal number greater than 1, or 0 if none exists. A188891

Pseudoprimes to base 8 that are not squarefree. A243090

Octagonal triangular numbers. A46183

Pseudoprimes to base 10 that are not squarefree. A306449

Strong pseudoprimes to base 35. A20261

Triangular numbers for which the sum of the digits equals the sum of the digits of the next triangular number. A117511