Properties of the Number -20495

Twenty Thousand Four Hundred Ninety-Five

Basics

Value: -20496 → -20495 → -20494

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 4099

Divisors: 1, 5, 4099, 20495

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000000001111

Octal: -50017

Duodecimal: -BA3B

Hexadecimal: -500f

Square: 420045025

Square Root: 143.1607488105591

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

Pseudo-random numbers: a (very weak) pseudo-random number generator from the second edition of the C book. A61364

a(n) = n³ + (n+1)*(n+2). A270109

T(n, 2n-9), T given by A027960. A27971

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 214", based on the 5-celled von Neumann neighborhood. A279939

Numbers k in which the digits of k² appear. A29774

Eigenvector of triangle A124428. A124430

Number of unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 5. A244459

a(n) = T(2·n+1, n+3), T given by A027011. A27018

a(n) = greatest number in row n of array T given by A027960. A27977

a(n) = 3·a(n-1) - 3·a(n-2) + 3·a(n-3) - 3·a(n-4) + a(n-5) for n >= 1, where a(0) = 2, a(1) = 4, a(2) = 7. a(3) = 11, a(4) = 20. A288380