Properties of the Number 15949

Fifteen Thousand Nine Hundred Forty-Nine

Basics

Value: 15948 → 15949 → 15950

Parity: odd

Prime: No

Previous Prime: 15937

Next Prime: 15959

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 41 × 389

Divisors: 1, 41, 389, 15949

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111001001101

Octal: 37115

Duodecimal: 9291

Hexadecimal: 3e4d

Square: 254370601

Square Root: 126.28935030318273

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

E.g.f. A(x) satisfies A(x) = exp(x·A(-3·x)). A385529

a(n) = n*(19·n - 1)/2. A22276

Indices k such that 9 plus the k-th triangular number is a perfect square. A154142

Number of connected dominating sets in the n-Cameron graph. A387373

Self-convolution of natural numbers >= 3. A23551

Denominators of continued fraction convergents to sqrt(314). A41593

Triangle read by rows: T(n,k) is the number of deco polyominoes of height n such that the bottom of the last column is at level k (n>=1; k>=0). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column. A121632

a(n) = 2^floor((n-1/2)) - n*(n-1)/2. A163417

Numbers k such that 7·2^k + 3 is prime. A58592

Members of A038512 of the form k, k+2, k+6, k+8. A155511