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Properties of the Number 13860

Thirteen Thousand Eight Hundred Sixty

Basics

Value: 13859 → 13860 → 13861

Parity: even

Prime: No

Previous Prime: 13859

Next Prime: 13873

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 2 × 3 2 × 5 × 7 × 11

Divisors: 1, 2, 3, 4, 5, 6, 7, 9, 10, 11

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11011000100100

Octal: 33044

Duodecimal: 8030

Hexadecimal: 3624

Square: 192099600

Square Root: 117.7285012220915

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

Pell numbers: a(0) = 0, a(1) = 1; for n > 1, a(n) = 2·a(n-1) + a(n-2). A129
Triangle of Narayana numbers T(n,k) = C(n-1,k-1)*C(n,k-1)/k with 1 <= k <= n, read by rows. Also called the Catalan triangle. A1263
Primorial inflation of n: Fully multiplicative with a(p) = p# for prime p, where x# is the primorial A034386(x). A108951
Landau's function g(n): largest order of permutation of n elements. Equivalently, largest LCM of partitions of n. A793
a(n) = 6·a(n-1) - a(n-2) for n > 1, a(0)=0 and a(1)=2. A1542
a(1)=1, a(2)=2; thereafter, a(n) is the smallest number m not yet in the sequence such that every prime that divides a(n-1) also divides m. A60735
Triangle of Bessel numbers read by rows: T(n,k) is the number of k-matchings of the complete graph K(n). A100861
Triangle of coefficients of Bessel polynomials (exponents in decreasing order). A1497
a(n) = n*(n+1)*(2·n+1)/3. A6331
Triangle a(n,k) (n >= 0, 0 <= k <= n) of coefficients of Bessel polynomials yn(x) (exponents in increasing order). A1498