Properties of the Number 39726

Thirty-Nine Thousand Seven Hundred Twenty-Six

Basics

Value: 39725 → 39726 → 39727

Parity: even

Prime: No

Previous Prime: 39719

Next Prime: 39727

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 2207

Divisors: 1, 2, 3, 6, 9, 18, 2207, 4414, 6621, 13242

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101100101110

Octal: 115456

Duodecimal: 1ABA6

Hexadecimal: 9b2e

Square: 1578155076

Square Root: 199.31382290247709

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) = ceiling(n*φ¹⁶), where φ is the golden ratio, A001622. A4971

Modified Schroeder numbers for q=5. A114293

n+prime(n)+prime(prime(n)) is a triangular number, where prime(n) is the n-th prime. A116010

Fully multiplicative with a(prime(k)) = Lucas(2*(k+1)) for k-th prime p, where Lucas(n) = A000032(n). A324900

a(n) = round(n*φ¹⁶), where φ is the golden ratio, A001622. A4951

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 541", based on the 5-celled von Neumann neighborhood. A272807

Expansion of ∑_k>=0 k! * ( x/(1+x³) )^k. A370670

G.f. A(x) satisfies 1 = ∑_n=-oo..+oo ( x^2·n-1 + (-A(x))ⁿ )ⁿ. A377254

First row of Modified Schroeder numbers for q=5 (A114293). A114297

Recursive prime generating sequence. A39726