Properties of the Number 82912

Eighty-Two Thousand Nine Hundred Twelve

Basics

Value: 82911 → 82912 → 82913

Parity: even

Prime: No

Previous Prime: 82903

Next Prime: 82913

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 2591

Divisors: 1, 2, 4, 8, 16, 32, 2591, 5182, 10364, 20728

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100001111100000

Octal: 241740

Duodecimal: 3BB94

Hexadecimal: 143e0

Square: 6874399744

Square Root: 287.9444390850429

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

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={0,1,3}. A79957

a(n) = 81n² - n. A157953

a(n) = 324n² - 2n. A158305

a(n) = 1024·n² - 32. A158683

T(n, k) = (n + 1)*2^{n + k}*hypergeom([-n, k - n + 1], [2], 1/2), triangle read by rows for 0 <= k <= n. A337617

Least k such that H(k) > 10ⁿ, where H(k) is the harmonic number ∑_i=1..k 1/i. A82912