Properties of the Number 27858

Twenty-Seven Thousand Eight Hundred Fifty-Eight

Basics

Value: 27857 → 27858 → 27859

Parity: even

Prime: No

Previous Prime: 27851

Next Prime: 27883

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 4643

Divisors: 1, 2, 3, 6, 4643, 9286, 13929, 27858

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110011010010

Octal: 66322

Duodecimal: 14156

Hexadecimal: 6cd2

Square: 776068164

Square Root: 166.9071598224594

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) = ∑_m=1..n ∑_k=1..m prime(k). A14148

Barely abundant numbers: abundant n such that σ(n)/n < σ(m)/m for all abundant numbers m<n, σ(n) being the sum of the divisors of n. A71927

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 62", based on the 5-celled von Neumann neighborhood. A270081

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 817", based on the 5-celled von Neumann neighborhood. A273648

Number of partitions of n into a squarefree number of squarefree parts. A286330

Triangle of "Harmonic Coefficients" T(n,k), read by rows: (∑_i=1..n T(n,i) * kⁱ) * k! / ((n+k)! * n!) = (∑_i=1..k (1/i-1/(i+n)) = n * (∑_i=1..k 1/(i*(i+n)))). A27858