Properties of the Number 17381

Seventeen Thousand Three Hundred Eighty-One

Basics

Value: 17380 → 17381 → 17382

Parity: odd

Prime: No

Previous Prime: 17377

Next Prime: 17383

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 13 × 191

Divisors: 1, 7, 13, 91, 191, 1337, 2483, 17381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001111100101

Octal: 41745

Duodecimal: A085

Hexadecimal: 43e5

Square: 302099161

Square Root: 131.83702059740276

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 in which the sequence of the sum of the same summands is increasing. A304428

a(n) = 2nd elementary symmetric function of the first n+1 odd positive integers. A24196

Triangle read by rows: T(n,k) gives number of ways of arranging n chords on a circle with k simple intersections (i.e., no intersections with 3 or more chords) - positive values only. A67311

a(n) = binomial(n+3,6) + binomial(n+1,5) + binomial(n,5). A5732

Quadrinomial coefficients. A5720

Convolution of nonzero squares (A000290) with nonzero pentagonal numbers (A000326). A271663

Numbers k such that k and 4k, taken together, contain all digits 1 though 9 at least once. A346135

Numbers n such that A117731(n) differs from A082687(n). A125740

a(n) = (10·n + 9)⁵. A17381