Properties of the Number -18442

Eighteen Thousand Four Hundred Forty-Two

Basics

Value: -18443 → -18442 → -18441

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 9221

Divisors: 1, 2, 9221, 18442

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100000001010

Octal: -44012

Duodecimal: -A80A

Hexadecimal: -480a

Square: 340107364

Square Root: 135.80132547217644

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

Number of 8's in all partitions of n. A24792

Numbers k such that k·2^m-1 are composites for all exponents m in the range 0<=m<=k. A61154

Number of compositions of n with strictly increasing run-lengths. A333192

a(n) = 18·2ⁿ + 10. A305060

The crystallogen sequence (a(n) = A018227(n)-4). A271996

a(n) = T(n,n), array T given by A048494. A48504

Number of length n+6+1 0..6 arrays with every value 0..6 appearing at least once in every consecutive 6+2 elements, and new values 0..6 introduced in order. A242237

Numbers whose base-4 representation contains exactly four 0's and three 2's. A45060

Numbers k such that (44·10^k - 233)/9 is prime. A294128