Properties of the Number -4381

Three Hundred Eighty-One

Basics

Value: -4382 → -4381 → -4380

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 13 × 337

Divisors: 1, 13, 337, 4381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000100011101

Octal: -10435

Duodecimal: -2651

Hexadecimal: -111d

Square: 19193161

Square Root: 66.18912297349165

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

Numerator of Laguerre(n, 2). A160623

Stella octangula numbers: a(n) = n*(2·n² - 1). A7588

Numbers that are the sum of 9 positive 7th powers. A3376

Numbers k such that the geometric mean of φ(k) and σ(k) is an integer. A11257

a(n) = ∑_{k=0..floor(n/2)} A026615(n, k). A26623

Number of partitions of n into distinct parts, none being 2. A15744

Positions of 13 after decimal point in decimal expansion of π. A134213

Integers that are squarefree and also the sum of first k squarefrees for some k. A13932

a(n) = 5·n² - 4·n + 1. A190816

Sum of the fourth largest parts in the partitions of n into 6 squarefree parts. A308908