Properties of the Number -14987

Fourteen Thousand Nine Hundred Eighty-Seven

Basics

Value: -14988 → -14987 → -14986

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 7 × 2141

Divisors: 1, 7, 2141, 14987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101010001011

Octal: -35213

Duodecimal: -880B

Hexadecimal: -3a8b

Square: 224610169

Square Root: 122.42140335741949

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

a(n) = number of Egyptian fractions 1 = 1/x₁ + ... + 1/x_k (for any k), 0<x₁<...<x_k=n. A92669

Numbers k such that σ(φ(k)) - φ(σ(k)) is nonzero and divisible by σ(k), that is A065395(k)/A000203(k) is a nonzero integer. A92588

Strings of 5 digits from 1...9, such that no formula using the single digits in the given order exists that evaluates to 0. A288355

a(n) = ∑_{k=0..floor(n/4)} 2^k * binomial(2·n-6·k+1,2·k+1). A387629

Nonzero elements of A092669. A92672

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (0, 1, -1), (1, 0, 1), (1, 1, 1)}. A150968