Properties of the Number 19075

Nineteen Thousand Seventy-Five

Basics

Value: 19074 → 19075 → 19076

Parity: odd

Prime: No

Previous Prime: 19073

Next Prime: 19079

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 ² × 7 × 109

Divisors: 1, 5, 7, 25, 35, 109, 175, 545, 763, 2725

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100101010000011

Octal: 45203

Duodecimal: B057

Hexadecimal: 4a83

Square: 363855625

Square Root: 138.11227316933133

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

Partial sums of A299268. A299269

a(1) = 2; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1. A25003

a(n) = n*(n² - 4·n + 5)/2. A162607

Triangle read by rows: T(n,k) is number of labeled bipartite graphs with n nodes and k edges. A117279

G.f. A(x) satisfies A(x) = 1/(1 - x)³ + x*(1 - x)³*A(x)³. A366034

Fibonacci sequence beginning 7, 15. A22389

Number of bipartite graphs with 4 edges on nodes {1..n}. A53527

Numbers k such that 6·p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)-1 and 6·p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)+1 are twin primes with p(h) = h-th prime. A129311

a(n) = 66·n² + 1. A158689

Number of n X 4 binary arrays with all 1s connected, all corners 1, and no 1 having more than two 1s adjacent. A163735