Properties of the Number -18826

Eighteen Thousand Eight Hundred Twenty-Six

Basics

Value: -18827 → -18826 → -18825

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 9413

Divisors: 1, 2, 9413, 18826

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100110001010

Octal: -44612

Duodecimal: -AA8A

Hexadecimal: -498a

Square: 354418276

Square Root: 137.20787149431334

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

The array in A059216 read by antidiagonals in 'up' direction. A59217

Expansion of ∑_k>0 (1/(1 - k·x^k)² - 1). A362683

Consecutive states of the linear congruential pseudo-random number generator 172·s mod 30307 when started at s=1. A385032

Number of n-step self-avoiding walks on the Manhattan lattice with no non-contiguous adjacencies. A336662

The array in A059216 read by antidiagonals in the direction in which it was constructed. A59234

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 782", based on the 5-celled von Neumann neighborhood. A273536

Lexicographically earliest sequence of positive integers a(1), a(2), a(3), ... such that for any n > 0, ∑_{k = 1..n} 1/(k·a(k)) < ∑_{k = 1..oo} 1/k² = π²/6. A376941