Properties of the Number 13804

Thirteen Thousand Eight Hundred Four

Basics

Value: 13803 → 13804 → 13805

Parity: even

Prime: No

Previous Prime: 13799

Next Prime: 13807

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 7 × 17 × 29

Divisors: 1, 2, 4, 7, 14, 17, 28, 29, 34, 58

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11010111101100

Octal: 32754

Duodecimal: 7BA4

Hexadecimal: 35ec

Square: 190550416

Square Root: 117.49042514179612

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

Rectangular table, read by antidiagonals, defined by the following rule: start with all 1's in row zero; from then on, row n+1 equals the partial sums of row n excluding terms in columns k = m*(m+1)/2 - 2 (m>=2). A125781

Numbers k such that k³ divides 15^k² - 1. A177915

Number of graphs with a distinguished bipartite block, by number of vertices. A49312

Sum of the sixth largest parts in the partitions of n into 7 parts. A308928

Numbers k such that the odd part of σ(σ(k)) is equal to the odd part of σ(k). A353365

Column 4 of table A125781. A125784

E.g.f. satisfies: A'(x) = 1 + x·A(x)² where A(0) = 1. A144012

Expansion of (1-2·x-2·x²-sqrt(1-4·x-4·x²+8·x³+4·x⁴))/(2·x²). A174403

Triangle T(n,k) with the coefficient [x^k] of 1/(1-2·x-x²+x³)^n-k+1 in row n, column k. A188106

a(n) = (5·n+1)*(5·n+4). A1545