Properties of the Number 27487

Twenty-Seven Thousand Four Hundred Eighty-Seven

Basics

Value: 27486 → 27487 → 27488

Parity: odd

Prime: Yes

Previous Prime: 27481

Next Prime: 27509

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 27487

Divisors: 1, 27487

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101101011111

Octal: 65537

Duodecimal: 13AA7

Hexadecimal: 6b5f

Square: 755535169

Square Root: 165.792038409569

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

Numbers whose square root in base 10 starts with 10 distinct digits. A113507

Numbers k such that ∑_i=1..k i⁷ divides ∏_i=1..k i⁷. A166607

a(n) is the number of pairs of integer quadruples (b₁, b₂, b₃, b₄) and (c₁, c₂, c₃, c₄) satisfying 1 <= b₁ < b₂ < b₃ < b₄ < n, 1 <= c₁ < c₂ < c₃ < c₄ < n, b_i ≠ c_j for all i,j = 1,2,3,4 and ∏_i=1..4 cos(2*π*b_i/n) = ∏_i=1..4 cos(2*π*c_i/n). A63780

Triangle read by rows: T(n,k) = 2·A011971(n,k) - 1. A136791

Pisot sequence T(7,10), a(n) = floor(a(n-1)²/a(n-2)). A20752

a(n) is the smallest prime such that it and the previous four primes are all of the form x² + n·y². A212605

Primes having only {2, 4, 7, 8} as digits. A386157

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 0), (-1, 0, 1), (0, 1, 0), (1, -1, 0)}. A148283

Second column of triangle A027477, constructed from the Stirling numbers of the first kind. A27487