Properties of the Number -16487

Sixteen Thousand Four Hundred Eighty-Seven

Basics

Value: -16488 → -16487 → -16486

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 16487

Divisors: 1, 16487

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100000001100111

Octal: -40147

Duodecimal: -965B

Hexadecimal: -4067

Square: 271821169

Square Root: 128.40171338420683

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

INVERT transform of A055615, n*μ(n). A144028

Numbers k such that 3^k + 10 is prime. A217137

Numbers which are primes and which remain prime for three successive applications of incrementing each digit by 2 with carries ignored. A88787

Smallest prime p > 3 such that p-1 has a prime factor > (p-1)^n/(n+1). A111671

Expansion of x⁶/((1 - x)²*(1 - 2·x + x³ - x⁴)). A290986

a(n) = ∑_k=1..n k * τ(k)², where τ is A000005. A320896

Primes p that become composite when any nonzero decimal digit is appended or deleted on the right or left of p. A226144

a(n) = number of unlabeled rooted trees on n nodes with an odd number of endpoints. A253014

Series for 2nd perpendicular moment of square lattice bond percolation near a wall (eventually goes negative). A56601

Number of permutations of length n which avoid the patterns 123, 2431, 4132. A116713