Properties of the Number -109215

One Hundred Nine Thousand Two Hundred Fifteen

Basics

Value: -109216 → -109215 → -109214

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 809

Divisors: 1, 3, 5, 9, 15, 27, 45, 135, 809, 2427

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7989 Try Today's Challenge

Representations

Binary: -11010101010011111

Octal: -325237

Duodecimal: -53253

Hexadecimal: -1aa9f

Square: 11927916225

Square Root: 330.47692809029803

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

Numbers k such that σ(k) = σ(k-1). A231546

Irregular triangle read by row: T(n,k), n>=1, k>=1, in which column k lists the numbers of A000716 multiplied by A000330(k), and the first element of column k is in row A000217(k). A252117

Runs of consecutive numbers with the same number and sum of divisors. A225758

Numbers k that divide σ(k) - σ(k-1). A227307