Properties of the Number 18507

Eighteen Thousand Five Hundred Seven

Basics

Value: 18506 → 18507 → 18508

Parity: odd

Prime: No

Previous Prime: 18503

Next Prime: 18517

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 31 × 199

Divisors: 1, 3, 31, 93, 199, 597, 6169, 18507

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100001001011

Octal: 44113

Duodecimal: A863

Hexadecimal: 484b

Square: 342509049

Square Root: 136.0404351654316

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 n such that uphi(n) = uphi(n+1), where uphi(n) is the unitary totient function (A047994). A287055

Numbers k such that A206369(k) = A206369(k + 1). A206368

Numbers k such that iphi(k) = iphi(k+1), where iphi(k) is an infinitary analog to the Euler totient function (A091732). A326403

Numbers k such that prime(k) + prime(k+1)*2 is a square. A64504

Numbers k such that A384247(k) = A384247(k+1). A385743

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 90. A31588

Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 3 ones in any 5 X 5 X 5 subtriangle. A153928

Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 3,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid. A155274

Divisors of 536. A18507