Properties of the Number 38689

Thirty-Eight Thousand Six Hundred Eighty-Nine

Basics

Value: 38688 → 38689 → 38690

Parity: odd

Prime: No

Previous Prime: 38677

Next Prime: 38693

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 7 × 5527

Divisors: 1, 7, 5527, 38689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001011100100001

Octal: 113441

Duodecimal: 1A481

Hexadecimal: 9721

Square: 1496838721

Square Root: 196.69519567086533

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 k such that 50·R_k + 9 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56687

Number of n-length words w over a 3-ary alphabet such that w is empty or a prefix z concatenated with letter a_i and i=1 or 0 < #(z,a_i-1) >= #(z,a_i), where #(z,a_i) counts the occurrences of the i-th letter in z. A240609

[ n(n-1)(n-2)(n-3)/17 ]. A11927

Number of directed multigraphs with loops containing n edges and an infinite number of vertices modulo isomorphism and reversal of all edge directions. A364088

Numbers n such that 7·3ⁿ - 2 is prime. A58605

Duplicate of A030000. A38689