Properties of the Number 11800

Eleven Thousand Eight Hundred

Basics

Value: 11799 → 11800 → 11801

Parity: even

Prime: No

Previous Prime: 11789

Next Prime: 11801

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 5 ² × 59

Divisors: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111000011000

Octal: 27030

Duodecimal: 69B4

Hexadecimal: 2e18

Square: 139240000

Square Root: 108.62780491200216

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

Heptagonal (or 7-gonal) pyramidal numbers: a(n) = n*(n+1)*(5·n-2)/6. A2413

Number of binary carry-connected integer partitions of n. A325098

House numbers (version 2): a(n) = (n+1)³ + (n+1)*∑_i=0..n i. A50509

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0ⁿ and T(n,k) = k * ∑_r=0..n binomial(n,r) * binomial(2·n+2·r+k,n)/(2·n+2·r+k) for k > 0. A378239

Ulam's spiral (SSW spoke). A143838

∑_i=0..n ∑_j=0..n (i AND j), where AND is the binary logical AND operator. A224924

Hexagonal spiral constructed on the nodes of the triangular net in which each new term is the sum of its neighbors. A278181

Triangle of coefficients of polynomials u(n,x) jointly generated with A209776; see the Formula section. A209775

Numbers n such that sum of squares of digits of n equals the sum of prime divisors of n. A217390

Expansion of ∏_k>=1 (1 - ∑_j>=1 j·x^k·j). A329157