Properties of the Number 47840

Forty-Seven Thousand Eight Hundred Forty

Basics

Value: 47839 → 47840 → 47841

Parity: even

Prime: No

Previous Prime: 47837

Next Prime: 47843

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ⁵ × 5 × 13 × 23

Divisors: 1, 2, 4, 5, 8, 10, 13, 16, 20, 23

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011101011100000

Octal: 135340

Duodecimal: 23828

Hexadecimal: bae0

Square: 2288665600

Square Root: 218.72356983187706

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 Eulerian numbers T(n,k) (n >= 1, 1 <= k <= n) read by rows. A8292

Euler's triangle: triangle of Eulerian numbers T(n,k) (n>=0, 0 <= k <= n) read by rows. A173018

Triangle of Eulerian numbers T(n,k), 0 <= k <= n, read by rows. A123125

Eulerian numbers (Euler's triangle: column k=3 of A008292, column k=2 of A173018). A460

Catalan numbers minus odd-indexed Fibonacci numbers. A122880

Eulerian numbers (Euler's triangle: column k=8 of A008292, column k=7 of A173018). A1244

Even numbers in the triangle of Eulerian numbers. A14450

Triangle read by rows, application of the transformation A337966 to Euler's triangle A173018. T(n, k) for 0 <= k <= n. A337967

Distinct elements occurring in triangle of Eulerian numbers (sorted). A30196

Values of Newton-Gregory forward interpolating polynomial (1/3)*(n-1)*(2·n+3)*(2·n-1). A30440