Properties of the Number 39215

Thirty-Nine Thousand Two Hundred Fifteen

Basics

Value: 39214 → 39215 → 39216

Parity: odd

Prime: No

Previous Prime: 39209

Next Prime: 39217

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 11 × 23 × 31

Divisors: 1, 5, 11, 23, 31, 55, 115, 155, 253, 341

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001100100101111

Octal: 114457

Duodecimal: 1A83B

Hexadecimal: 992f

Square: 1537816225

Square Root: 198.02777582955378

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

Integers that are Rhonda numbers to base 8. A100970

Conjectured lower bound for the number of spheres of radius 1 that can be packed in a sphere of radius n. A121346

a(n) = (7ⁿ⁺¹ - 4) / 3. A233326

a(n) = n*(n+1)*(22·n-19)/6. A256716

a(n) = n*(n + 1)*(n² - n + 3)/6. A257055

a(n) = 121·n² + 11. A158536

a(n) = Fibonacci(n)³ + (-1)ⁿ*Fibonacci(n+2). A220363

Numbers k such that s(k) = s(k+1), where s(k) is A059975. A327250

a(n) is the number in the first column of the Trithoff (tribonacci) array that starts off the row containing the tail of n times the tribonacci sequence. A351689

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 36. A31714