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Properties of the Number 11187

Eleven Thousand One Hundred Eighty-Seven

Basics

Value: 11186 → 11187 → 11188

Parity: odd

Prime: No

Previous Prime: 11177

Next Prime: 11197

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 2 × 11 × 113

Divisors: 1, 3, 9, 11, 33, 99, 113, 339, 1017, 1243

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101110110011

Octal: 25663

Duodecimal: 6583

Hexadecimal: 2bb3

Square: 125148969

Square Root: 105.76861538282516

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 the least part occurs exactly twice. A96373
Number of balls in pyramid with base either a regular hexagon or a hexagon with alternate sides differing by 1 (balls in hexagonal pyramid of height n taken from hexagonal close-packing). A19298
3 times 9-gonal (or nonagonal) numbers: a(n) = 3·n*(7·n-5)/2. A152759
a(n) = ∑1 <= i, j <= n gcd(i, j, n)3. A368743
Principal diagonal of the convolution array A213771. A213772
The sums of pairs of adjacent terms are the odd palindromic primes in ascending order. A181881
Principal diagonal of the convolution array A213551. A213552
Triangle read by rows: T(n,k) is the number of Motzkin paths of length n and having k UHD's, where U=(1,1),H=(1,0),D=(1,-1) (0<=k<=floor(n/3)). A114583
Numbers whose set of base-14 digits is {1,4}. A32826
75-gonal numbers: a(n) = n*(73·n-71)/2. A98230