Properties of the Number 81418

Eighty-One Thousand Four Hundred Eighteen

Basics

Value: 81417 → 81418 → 81419

Parity: even

Prime: No

Previous Prime: 81409

Next Prime: 81421

Digit Sum: 22

Digital Root: 4

Palindrome: Yes

Factorization: 2 × 40709

Divisors: 1, 2, 40709, 81418

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011111000001010

Octal: 237012

Duodecimal: 3B14A

Hexadecimal: 13e0a

Square: 6628890724

Square Root: 285.3383955937231

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

Palindromic Smith numbers. A98834

Base 10 palindromes that start with 8. A43043

Triangle read by rows: T(n,k) = binomial(primepi(n), primepi(j)), j=0..n and n>=0. A81418