Properties of the Number -18801

Eighteen Thousand Eight Hundred One

Basics

Value: -18802 → -18801 → -18800

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 2089

Divisors: 1, 3, 9, 2089, 6267, 18801

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100100101110001

Octal: -44561

Duodecimal: -AA69

Hexadecimal: -4971

Square: 353477601

Square Root: 137.11673858431726

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

a(n) is the solution to the postage stamp problem with 5 denominations and n stamps. A1210

T(n,k)=Number of nXk 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. A200777

Sum of the second largest parts of the partitions of n into 8 squarefree parts. A326451

Number of meaningful differential operations of the n-th order on the space R⁵. A90990

Fixed points of A275957; numbers n for which A060125(n) = A225901(n). A275843

Number of permutations (p(1),p(2),...,p(n)) of (1,2,...,n) such that p(i)-i is in {-2,-1,4} for all i=1,...,n. A376743

Number of monocyclic skeletons with n carbon atoms and a ring size of 6. A120779

Sum of the cubes of the first n cubefree numbers. A114286

Number of nX4 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. A200773

Numbers·such that the base 10 representation of x² forms an arithmetic sequence when split into equal-sized chunks. A244660