Properties of the Number 11880

Eleven Thousand Eight Hundred Eighty

Basics

Value: 11879 → 11880 → 11881

Parity: even

Prime: No

Previous Prime: 11867

Next Prime: 11887

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ³ × 5 × 11

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111001101000

Octal: 27150

Duodecimal: 6A60

Hexadecimal: 2e68

Square: 141134400

Square Root: 108.9954127475097

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

Triangle of Stirling numbers of the second kind, S2(n,k), n >= 1, 1 <= k <= n. A8277

Coefficient of·in the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192951

Triangle read by rows, the Bell transform of the triple factorial numbers A007559(n+1) without column 0. A35469

Products of 4 consecutive integers: a(n) = n*(n-1)*(n-2)*(n-3). A52762

a(n) = (prime(n)-1)*(prime(n)+1). A84920

Multiples of 18 containing a 18 in their decimal representation. A121038

a(1)=1, a(n)=a(n-1)+n if n odd, a(n)=a(n-1)+ n² if n is even. A140113

Triangle read by rows: T(n,k) = number of Dyck paths of semilength n having k peaks at odd height. A91867

Triangle read by rows, T(n, k) = binomial(n, k)*binomial(n + 2, k). A62196

Numbers that can be expressed as the difference of the squares of primes in exactly four distinct ways. A92000