Properties of the Number 38405

Thirty-Eight Thousand Four Hundred Five

Basics

Value: 38404 → 38405 → 38406

Parity: odd

Prime: No

Previous Prime: 38393

Next Prime: 38431

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7681

Divisors: 1, 5, 7681, 38405

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001011000000101

Octal: 113005

Duodecimal: 1A285

Hexadecimal: 9605

Square: 1474944025

Square Root: 195.97193676646665

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^k * (1 + k·x)). A336976

The start of a record-breaking run of consecutive integers with an even number of prime factors. A66793

a(n) is the smallest k such that the n consecutive values λ(k), λ(k+1), ..., λ(k+n-1) = 1, where λ(m) is the Liouville function A008836(m). A175201

Records in A353717. A353722

Numbers n such that μ(n) + μ(n+1) + μ(n+2) + μ(n+3) + μ(n+4) + μ(n+5) + μ(n+6) = 6. A82967

a(n) is the least number k such that the sum of the n Moebius function values beginning at k reaches the maximum value A083544(n). A225420

Column 5 of triangle A091602. A91608

Number of binary strings of length n with equal numbers of 00000 and 01010 substrings. A164185

Start of record runs with λ(k) = λ(k+1) = ..., where λ is Liouville's function A008836. A233445

Number of length 4 arrays x(i), i=1..4 with x(i) in i..i+n and no value appearing more than 3 times. A250362