Properties of the Number 8019

Eight Thousand Nineteen

Basics

Value: 8018 → 8019 → 8020

Parity: odd

Prime: No

Previous Prime: 8017

Next Prime: 8039

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁶ × 11

Divisors: 1, 3, 9, 11, 27, 33, 81, 99, 243, 297

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101010011

Octal: 17523

Duodecimal: 4783

Hexadecimal: 1f53

Square: 64304361

Square Root: 89.5488693395958

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

Numbers that are the sum of 2 positive 5th powers. A3347

Numbers of the form 3ⁱ*11^j. A3597

Sum of 5th powers of digits of n. A55014

3 times heptagonal numbers: a(n) = 3·n*(5·n-3)/2. A152773

Numbers with prime factorization p·q⁶. A189987

Recurrence a(n+2) = ∑_k=0..n binomial(n,k)*a(k)*a(n+1-k) with a(0)=1, a(1)=-1. A289064

Numbers with 14 divisors. A30632

G.f. A(x) satisfies A(x) = (1 + 9·x*A(x)²)^1/3. A376636

Numbers of the form (9ⁱ)*(11^j), with i, j >= 0. A108687

Distribute the odd numbers in columns based on the occurrence of "3" in each prime factorization; square array A(row, col) = 3^row-1 * A007310(col), read by antidiagonals A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ... A135765