Properties of the Number 11864

Eleven Thousand Eight Hundred Sixty-Four

Basics

Value: 11863 → 11864 → 11865

Parity: even

Prime: No

Previous Prime: 11863

Next Prime: 11867

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 1483

Divisors: 1, 2, 4, 8, 1483, 2966, 5932, 11864

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10111001011000

Octal: 27130

Duodecimal: 6A48

Hexadecimal: 2e58

Square: 140754496

Square Root: 108.92199043352082

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 having positive even rank (the rank of a partition is the largest part minus the number of parts). A101708

Given M = triangle A122196 as an infinite lower triangular matrix, this sequence is lim_k->infinity M^k. A171238

Number of permutations of [n] containing exactly 2 increasing subsequences of length 3. A1089

Smallest even fundamental discriminant k such that h(-k) = 2n, where h(D) is the class number of the quadratic field with discriminant D; or 0 if no such k exists. A344072

Triangle read by rows. Same rule as Aitken triangle (A011971) except T(0,0) = 1, T(1,0) = 2. A46937

Expansion of x/(1 - x - 2·x³ - 2·x⁵ - x⁷). A143373

Triangle T(n,k) read by rows: T(n,k) = number of permutations on 123...n with exactly two abc patterns and no aj pattern with j<=k, for n>=0, 0<=k<=n. A229158

Triangle read by rows: T(n,k) is the number of noncrossing trees with n edges in which the leftmost leaf is at level k. A101409

Constant term of the reduction by x²->x+1 of the polynomial p(n,x) defined below in Comments. A192749

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of (f(i,j)), where f(i,1)=f(1,j)=1, f(i,i)= i; f(i,j)=0 otherwise; as in A204179. A204180