Properties of the Number 16940

Sixteen Thousand Nine Hundred Forty

Basics

Value: 16939 → 16940 → 16941

Parity: even

Prime: No

Previous Prime: 16937

Next Prime: 16943

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 7 × 11 ²

Divisors: 1, 2, 4, 5, 7, 10, 11, 14, 20, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001000101100

Octal: 41054

Duodecimal: 9978

Hexadecimal: 422c

Square: 286963600

Square Root: 130.15375522819156

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

Numbers k such that the k-th composition in standard order is a permutation (of an initial interval). A333218

a(n) = 2·n*(7·n - 3). A316466

Triangle read by rows: T(n,k) = number of configurations of k nonattacking bishops on the black squares of an n X n chessboard (0 <= k <= n - [n>1]). A274105

Numbers n such that sopf(σ(n)) = σ(sopf(n)), where sopf(x) = sum of the distinct prime factors of x. A76532

a(n) = (n+1)*(n+2)*(n+3)*(9n+4)/24. A51798

a(n) = ∑_i=0..n digsum₅(i)⁴, where digsum₅(i) = A053824(i). A231671

a(n) = ∑_i=0..n digsum₆(i)⁴, where digsum₆(i) = A053827(i). A231675

Eleven times hexagonal numbers: a(n) = 11·n*(2·n-1). A154617

Number of discordant permutations. A562

Ninth convolution of A002605(n) (generalized (2,2)-Fibonacci), n>=0, with itself. A73398