Properties of the Number 18398

Eighteen Thousand Three Hundred Ninety-Eight

Basics

Value: 18397 → 18398 → 18399

Parity: even

Prime: No

Previous Prime: 18397

Next Prime: 18401

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 9199

Divisors: 1, 2, 9199, 18398

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011111011110

Octal: 43736

Duodecimal: A792

Hexadecimal: 47de

Square: 338486404

Square Root: 135.639227364358

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 partitions of n such that (number parts having multiplicity 1) is a part or (number of parts > 1) is a part. A241515

Numbers k such that A019320(k) is in A217468. A297412

Number of compositions (ordered partitions) of n into distinct parts where no part is a multiple of 3. A332309

Denominators of continued fraction convergents to sqrt(423). A41805

G.f. satisfies: A(x) = x*∏_n>=1 1/(1 - x·A(x)ⁿ). A192478

Numbers k such that 2^m == 2 (mod m*(m-1)), where m=A019320(k). A297413

Number of binary strings of length n with no substrings equal to 0001 0101 or 0110. A164469

Number of length-n binary strings that are the concatenation of two nonempty palindromes. A370410

Positions where number of periodic partitions increases. A59994

Numbers k such that (412·10^k - 7)/9 is prime. A294125