Properties of the Number -11885

Eleven Thousand Eight Hundred Eighty-Five

Basics

Value: -11886 → -11885 → -11884

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 2377

Divisors: 1, 5, 2377, 11885

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10111001101101

Octal: -27155

Duodecimal: -6A65

Hexadecimal: -2e6d

Square: 141253225

Square Root: 109.01834707974616

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

Row sums of inverse of sequence array for Euler φ function. A106480

a(n) is the difference between A084321(n) and the (n-1)th power of 2. A85355

Indices of record high-points in the sequence of Sprague-Grundy values for Grundy's game. A180120

Numbers n where τ(n) and n-τ(n) are perfect squares, with τ(n) the number of divisors of n (A000005). A245197

Expansion of ∏_k>=1 1/(1 - x^k)^3·k*(k-1/2+1). A295179

Numbers n such that 1n1, 3n3, 7n7 and 9n9 are all primes. A59677

Number of (w,x,y,z) with all terms in {0,...,n} and 2w-x=max{w,x,y,z}-min{w,x,y,z}. A212756

a(n) = prime(1)² + prime(n)². A287922

Number of integer partitions of n whose ω-sequence has repeated parts. A325285

a(n) is the smallest possible side·in a family of triangles with integer sides x, y < x, x-y < z < x+y, such that exactly n pairs of triangles with equal area exist in this family. A375748