Properties of the Number 27621

Twenty-Seven Thousand Six Hundred Twenty-One

Basics

Value: 27620 → 27621 → 27622

Parity: odd

Prime: No

Previous Prime: 27617

Next Prime: 27631

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 11 × 31

Divisors: 1, 3, 9, 11, 27, 31, 33, 81, 93, 99

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110101111100101

Octal: 65745

Duodecimal: 13B99

Hexadecimal: 6be5

Square: 762919641

Square Root: 166.1956678135745

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+1)-+a(n)=prime, a(n+1)*a(n)=Average of twin prime pairs, a(1)=1,a(2)=4. A154493

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 353", based on the 5-celled von Neumann neighborhood. A281287

Number of noncrossing path sets on n nodes with each path having a prime number of nodes. A303729

Expansion of 1/((1-3·x)*(1-12·x)). A16147

Number of partitions of n into parts but with two kinds of parts of sizes 1,2,3,4,5 and 6. A103925

a(n) = floor(sqrt(π(2ⁿ))). A133498

In decimal expansion of exp(π), positions of 10-digit partitions containing exactly 10 distinct digits. A104791

a(n) = n + (n+1)² + (n+2)³ + (n+3)⁴. A27621