Properties of the Number -171856

One Hundred Seventy-One Thousand Eight Hundred Fifty-Six

Basics

Value: -171857 → -171856 → -171855

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 23 × 467

Divisors: 1, 2, 4, 8, 16, 23, 46, 92, 184, 368

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101001111101010000

Octal: -517520

Duodecimal: -83554

Hexadecimal: -29f50

Square: 29534484736

Square Root: 414.5551832989186

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

Smaller of an amicable pair: (a,b) such that σ(a) = σ(b) = a+b, a < b. A2025

Amicable pairs. A259180

Start with a single triangle; at n-th generation add a triangle at each vertex, allowing triangles to overlap; sequence gives total population of triangles at n-th generation. A61777

Amicable pairs (x < y) ordered by nondecreasing sum (x + y) and then by increasing x. A259933

Numbers k that divide the number of partitions of k into distinct parts (A000009). A56848

Smaller of amicable pair (x, y) as they are listed in A259933. A260086

Amicable pairs with the property that both members have the same number of divisors. A328064

Conjectured list of smallest terms of k-sociable cycles of order r. A183016

Amicable pairs of even numbers. A262622

Irregular triangle in which row n consists of the smaller of pairs of amicable numbers of the form 2ⁿ pq, with p and q odd primes. A180650