Properties of the Number 84580

Eighty-Four Thousand Five Hundred Eighty

Basics

Value: 84579 → 84580 → 84581

Parity: even

Prime: No

Previous Prime: 84559

Next Prime: 84589

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 4229

Divisors: 1, 2, 4, 5, 10, 20, 4229, 8458, 16916, 21145

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100101001100100

Octal: 245144

Duodecimal: 40B44

Hexadecimal: 14a64

Square: 7153776400

Square Root: 290.82640870457413

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) = (1/s(1) + 1/s(2) + ... + 1/s(n+1)) * LCM{1, 2, ..., n}, where s(k) = LCM{1,2,...,k}/k = A002944(k). A25537

Number of length 5 nonnegative integer arrays starting and ending with 0 with adjacent elements unequal but differing by no more than n. A205342

Let y = m/GK(k), where m and k vary over the positive integers and GK(k)=log(1+1/(k*(k+2)))/log(2) is the Gauss-Kuzmin distribution of k. Sort the y values by size and number them consecutively by n. This sequence gives the values of k in order by n. A84580

Coordination sequence for A₁₁ lattice. A35837