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Properties of the Number -18798

Eighteen Thousand Seven Hundred Ninety-Eight

Basics

Value: -18799 → -18798 → -18797

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 13 × 241

Divisors: 1, 2, 3, 6, 13, 26, 39, 78, 241, 482

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100101101110

Octal: -44556

Duodecimal: -AA66

Hexadecimal: -496e

Square: 353364804

Square Root: 137.10579856446626

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

Numbers k such that the Reverse and Add! trajectory of k (presumably) does not reach a palindrome (with the exception of k itself) and does not join the trajectory of any term m < k. A88753
Integer part of Gauss's Arithmetic-Geometric Mean M(1,n4). A127760
n-th positive integer whose digits sum up to n. A81927
a(n) = 12 + floor((1 + ∑j=1..n-1 a(j))/4). A120169
n-th zerofree positive number with digital sum n. A181178
Numbers k such that sum of squares of digits of k equals the sum of prime divisors of k. A217390
Left edge of the triangle in A033291. A192735
Number of integers in n-th generation of tree T(2/3) defined in Comments. A274145
Coordination sequence for Cr3Si, Cr position. A9928
Numbers k such that 2·10k + 5·Rk - 4 is prime, where Rk = 11...1 is the repunit (A002275) of length k. A98930