Properties of the Number 27649

Twenty-Seven Thousand Six Hundred Forty-Nine

Basics

Value: 27648 → 27649 → 27650

Parity: odd

Prime: No

Previous Prime: 27647

Next Prime: 27653

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 43 × 643

Divisors: 1, 43, 643, 27649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110000000001

Octal: 66001

Duodecimal: 14001

Hexadecimal: 6c01

Square: 764467201

Square Root: 166.27988453207442

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

Composite and every divisor (except 1) contains the digit 4. A62670

Pierpont semiprimes: semiprimes of the form (2^K)*(3^L)+1. A113432

a(n) = 2·n³ + 1. A33562

T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 001 and 100 in rows, columns and nw-to-se diagonals. A202591

Semiprimes in A056107. A113525

MM-numbers of crossing, capturing multiset partitions (with empty parts allowed). A326259

Expansion of ∏_{k > 0} (1 + A147665(k)*x^k). A147871

Integers which can be written in exactly three ways as sum of two distinct nonzero pentagonal numbers. A333013

Numerators of the partial sums of the reciprocals of the unitary totient function (A047994). A379517

Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 19 (most significant digit on right). A29512