Properties of the Number 27387

Twenty-Seven Thousand Three Hundred Eighty-Seven

Basics

Value: 27386 → 27387 → 27388

Parity: odd

Prime: No

Previous Prime: 27367

Next Prime: 27397

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 17 × 179

Divisors: 1, 3, 9, 17, 51, 153, 179, 537, 1611, 3043

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101011111011

Octal: 65373

Duodecimal: 13A23

Hexadecimal: 6afb

Square: 750047769

Square Root: 165.49018097760361

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 k such that lcm(1,2,3,...,k)/13 equals the denominator of the k-th harmonic number H(k). A112818

Numbers k such that A071324(k) = A071324(k+1). A333261

Schroeder pseudoprimes: Composites k that divide the k-th Schroeder number A001003(k-1). A75764

Number of 0..n arrays x(0..11) of 12 elements with zero 6th differences. A200374

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 542", based on the 5-celled von Neumann neighborhood. A272811

Number of partitions such that the least positive integer which is not a part of the partition is prime. A305937

a(n) = n*(2·n - 3 - (-1)ⁿ)*(5·n - 2 + (-1)ⁿ)/16. A308025

Number of binary words w of length n with equal numbers of 010 and 101 subwords such that for every prefix of w the number of occurrences of subword 101 is larger than or equal to the number of occurrences of subword 010. A260697

Write digits for n, count endpoints (version 2). A27387