Properties of the Number -128648

One Hundred Twenty-Eight Thousand Six Hundred Forty-Eight

Basics

Value: -128649 → -128648 → -128647

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 13 × 1237

Divisors: 1, 2, 4, 8, 13, 26, 52, 104, 1237, 2474

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11111011010001000

Octal: -373210

Duodecimal: -62548

Hexadecimal: -1f688

Square: 16550307904

Square Root: 358.6753406633916

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

Sum over all permutations of [n] of the minimum of the lengths of longest increasing subsequence and longest decreasing subsequence. A321274

Expansion of (1/x) * Series_Reversion( x / ((1+x)² * B(x)) ), where B(x) is the g.f. of A002293. A381909