Properties of the Number 87827

Eighty-Seven Thousand Eight Hundred Twenty-Seven

Basics

Value: 87826 → 87827 → 87828

Parity: odd

Prime: No

Previous Prime: 87811

Next Prime: 87833

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 71 × 1237

Divisors: 1, 71, 1237, 87827

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011100010011

Octal: 253423

Duodecimal: 429AB

Hexadecimal: 15713

Square: 7713581929

Square Root: 296.3562045917041

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 triangles that can be built from rods with lengths 1,2,...,n by using and concatenating not necessarily all rods. A160456

Number of 7X2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2·n² (number of collections of 7 zero-sum 2-vectors with total modulus squared not more than 2·n², ignoring vector and component permutations). A192707

a(n) = a(a(Min(n-1,Abs(n-a(n-1)))))+a(Abs(n-a(n-3))). A87827