Properties of the Number -128945

One Hundred Twenty-Eight Thousand Nine Hundred Forty-Five

Basics

Value: -128946 → -128945 → -128944

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 × 17 × 37 × 41

Divisors: 1, 5, 17, 37, 41, 85, 185, 205, 629, 697

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111011110110001

Octal: -373661

Duodecimal: -62755

Hexadecimal: -1f7b1

Square: 16626813025

Square Root: 359.0891254271006

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 that are the hypotenuse of exactly 40 distinct integer-sided right triangles, i.e., k² can be written as a sum of two squares in 40 ways. A97282

Number of winning length n strings with a 5-symbol alphabet in "same game". A65238

Numbers that set a record for occurrences as longest side of a primitive Heronian triangle. A306626

Numbers n that are the product of four distinct odd primes and x² + y² = n has integer solutions. A264499

Odd numbers k > 1 such that A309906(k-1) < A309906(k) > A309906(k+1) < A309906(k+2) > A309906(k+3). A349938

Number of 2 X 2 matrices with integer entries in [-n,n] that are diagonalizable over the complex numbers. A338413