Properties of the Number 48639

Forty-Eight Thousand Six Hundred Thirty-Nine

Basics

Value: 48638 → 48639 → 48640

Parity: odd

Prime: No

Previous Prime: 48623

Next Prime: 48647

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 31 × 523

Divisors: 1, 3, 31, 93, 523, 1569, 16213, 48639

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011110111111111

Octal: 136777

Duodecimal: 24193

Hexadecimal: bdff

Square: 2365752321

Square Root: 220.5425129085093

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

Central Delannoy numbers: a(n) = ∑_k=0..n C(n,k)*C(n+k,k). A1850

Number A(n,k) of lattice paths from {n}^k to {0}^k using steps that decrement one or more components by one; square array A(n,k), n>=0, k>=0, read by antidiagonals. A262809

Number A(n,k) of lattice paths starting at {n}^k and ending when k or any component equals 0, using steps that decrement one or more components by one; square array A(n,k), n>=0, k>=0, read by antidiagonals. A263159

Number A(n,k) of lattice paths from {n}^k to {0}^k using steps that decrement one component or all components by 1; square array A(n,k), n>=0, k>=0, read by antidiagonals. A229142

Square array read by descending antidiagonals: T(n, k) where column k is the expansion of 1/sqrt(1 - 2*(k+1)*x + ((k-1)*x)²). A307883

a(n) = T([n/2],[(n+1)/2]), where T = Delannoy triangle (A008288). A26003

Crystal ball sequence for 7-dimensional cubic lattice. A1849

Number triangle, equal to half of Delannoy square array A008288. A113139

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of 1/sqrt(1 - 2*(2·k+1)*x + x²). A335333

Gaussian column reduction of Hankel matrix for central Delannoy numbers. A118384