Properties of the Number 71418

Seventy-One Thousand Four Hundred Eighteen

Basics

Value: 71417 → 71418 → 71419

Parity: even

Prime: No

Previous Prime: 71413

Next Prime: 71419

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 11903

Divisors: 1, 2, 3, 6, 11903, 23806, 35709, 71418

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001011011111010

Octal: 213372

Duodecimal: 353B6

Hexadecimal: 116fa

Square: 5100530724

Square Root: 267.24146384870744

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

a(n) = ∑_k=1..n σ(k)*σ(2·k), where σ(n) = A000203(n) is the sum of the divisors of n. A347108

Planar trees where no branch is identical to its adjacent neighbor. A106363

Number of nX4 0..1 arrays with every element equal to 0, 1, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302511

a(1)=0, a(n+1)=(a(n)+n)/2 if a(n)+n is even, a(n+1)=(3*(a(n)+n)+1)/2 otherwise. A71418