Properties of the Number 19007

Nineteen Thousand Seven

Basics

Value: 19006 → 19007 → 19008

Parity: odd

Prime: No

Previous Prime: 19001

Next Prime: 19009

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 83 × 229

Divisors: 1, 83, 229, 19007

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100101000111111

Octal: 45077

Duodecimal: ABBB

Hexadecimal: 4a3f

Square: 361266049

Square Root: 137.86587685138045

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

Expansion of ∏_k>=1 1/(1 - x^{2·k - 1})^k². A294750

a(1) = 1; a(n) = a(n-1) + σ(a(n-1)) where σ(k) = sum of the divisors of k. A81973

Anagrasum integers: integers N that exactly reproduce their set of digits when we form the set of sums of pairs of adjacent digits. A296521

Irregular array where row n is the positive integers which divide the sum of all previous rows. a(1,1)=1. A119763

Row sums of triangle A143102. A143103

a(n) = 576·n - 1. A158372

A bisection of A183168. A215933

a(n) = abs(a(n-1) - 3·a(n-2)) with a(1)=a(2)=1. A192263

Expansion of x*(1+x)/(1-x-2·x²-2·x³-x⁴). A210460

Number of (n+1) X (1+1) 0..1 arrays with no 2 X 2 subblock having zero or two 1's. A251212