Properties of the Number 19530

Nineteen Thousand Five Hundred Thirty

Basics

Value: 19529 → 19530 → 19531

Parity: even

Prime: No

Previous Prime: 19507

Next Prime: 19531

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 7 × 31

Divisors: 1, 2, 3, 5, 6, 7, 9, 10, 14, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110001001010

Octal: 46112

Duodecimal: B376

Hexadecimal: 4c4a

Square: 381420900

Square Root: 139.7497763862254

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

Smallest magic constant for any n X n magic square made from consecutive primes, or 0 if no such magic square exists. A73520

Number of 3·n binary matrices without unit columns up to row and column permutations. A57524

T(n,k)=Number of -k..k arrays x(0..n+2) of n+3 elements with zero sum and no two or three adjacent elements summing to zero. A200430

Triangle by rows T(n,k), showing the number of meanders with length (n+1)*6 and containing (k+1)*6 Ls and (n-k)*6 Rs, where Ls and Rs denote arcs of equal length and a central angle of 60 degrees which are positively or negatively oriented. A197655

Heinz number of the ω-sequence of n!. A325275

a(1)=1, a(n) = a(n-1) + (p-1)*p^n/2-1 if n is even, otherwise a(n) = a(n-1) + p^(n-1/2), where p=5. A133629

T(n,k) is the n-th derivative of the difference between the k-th tetration of x (power tower of order k) and its predecessor (or 0 if k=0) at x=1; triangle T(n,k), n>=0, 0<=k<=n, read by rows. A277536

Number of 4-way intersections in the interior of a regular 6n-gon. A137938

Numbers m such that the GCD of the x's that satisfy σ(x) = m is 4. A241649

Primitive terms of A388036. A388037