Properties of the Number 11080

Eleven Thousand Eighty

Basics

Value: 11079 → 11080 → 11081

Parity: even

Prime: No

Previous Prime: 11071

Next Prime: 11083

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 5 × 277

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 277, 554

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101101001000

Octal: 25510

Duodecimal: 64B4

Hexadecimal: 2b48

Square: 122766400

Square Root: 105.26157893552613

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

a(1)=1, a(n)=a(n-1)+n if n even, a(n)=a(n-1)+n² if n is odd. A136047

Partial sums of ceiling(n²/2) (A000982). A131941

Numbers n such that p(3n) is prime, where p(n) is the number of partitions of n. A111389

a(n) = 8^n-6 * (n+1)^n-8 * (16807·n⁶ + 143031·n⁵ + 525875·n⁴ + 1074745·n³ + 1294846·n² + 876856·n + 262144). A251588

Triangle T(n,k), 0<=k<=n, formed from coefficients when formula for n-th diagonal of triangle in A059718 is written as a sum of binomial coefficients. A59720

a(n) = (1+n)*(9 + 11·n + 4·n²)/3. A172482

Expansion of ∏_{i>=1, j>=0} (1 + x^{i·2^j}) / (1 - x^{i·2^j}). A327727

Number of fixed points in all cycle-up-down permutations of {1,2,...,n}. A186365

Numbers k for which A003958(σ(k)) = 2·A003958(k), where A003958 is multiplicative with a(p^e) = (p-1)^e and σ is the sum of divisors function. A351447

a(n) = ∑_k=0..n floor(sqrt(k))⁵. A363499