Properties of the Number -15662

Fifteen Thousand Six Hundred Sixty-Two

Basics

Value: -15663 → -15662 → -15661

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 41 × 191

Divisors: 1, 2, 41, 82, 191, 382, 7831, 15662

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11110100101110

Octal: -36456

Duodecimal: -9092

Hexadecimal: -3d2e

Square: 245298244

Square Root: 125.14791248758407

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

Number of different ways to select 5 disjoint subsets from {1..n} with equal element sum. A196232

Integers N such that by inserting + or - or·or / or ^ between each of their digits, without any grouping parentheses, you can get N (the ambiguous a^b^c is avoided). A156954

a(n) = n*(19·n-15)/2. A226490

Obtainable by applying +, * and exponentiation to its own digits. A46469

Numbers n such that the numerator of ∑_i=1..n (1/i²), in reduced form, is prime. A111354

Numbers m with odd length such that m = d₁+(d₂^d_3)+ ...+(d_k-1^d_k) where d₁ d₂ ... d_k is the decimal expansion of m. A112014

Triangle read by rows: T(n,k) is the number of ordered trees with n edges and k protected vertices (0<=k<=n-1). A protected vertex in an ordered tree is a vertex at least 2 edges away from its leaf descendants. A143362

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and 2w+x+y>1. A211618

Site series for second parallel moment of Kagome lattice. A120551

Number of n X 3 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A299590