Properties of the Number 27645

Twenty-Seven Thousand Six Hundred Forty-Five

Basics

Value: 27644 → 27645 → 27646

Parity: odd

Prime: No

Previous Prime: 27631

Next Prime: 27647

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 19 × 97

Divisors: 1, 3, 5, 15, 19, 57, 95, 97, 285, 291

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101111111101

Octal: 65775

Duodecimal: 13BB9

Hexadecimal: 6bfd

Square: 764246025

Square Root: 166.26785618392992

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

-3-Knödel numbers. A225507

Number of numbers in row n of the array at A243848. A243850

Average of terms in n-th row of A077529. A77532

Number of (w,x,y,z) with all terms in {1,...,n} and w<x>=y<=z. A212415

Numbers n such that φ(n) = φ(n+11), with Euler's totient function φ = A000010. A276504

Denominator of (1/3)*n*(n + 2)/((1 + 2·n)*(3 + 2·n)). A300295

Number of length n word structures with all distinct run-lengths using at most 3 symbols. A351639

a(n) = n·2¹⁰ - 3. A362361

a(n) = 1·t(n) + 2·t(n-1) + ... + k·t(n+1-k), where k=floor((n+1)/2) and t = A008578 ({1} U primes). A23862

Integers m such that φ(m) is equal to the sum of (the product of prime factors) and (the product of exponents) of m-1. A39777