Properties of the Number 19345

Nineteen Thousand Three Hundred Forty-Five

Basics

Value: 19344 → 19345 → 19346

Parity: odd

Prime: No

Previous Prime: 19333

Next Prime: 19373

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 53 × 73

Divisors: 1, 5, 53, 73, 265, 365, 3869, 19345

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101110010001

Octal: 45621

Duodecimal: B241

Hexadecimal: 4b91

Square: 374229025

Square Root: 139.08630414242805

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

Pseudoprimes to base 3. A5935

Strong pseudoprimes to base 3. A20229

Numerator of ∑_k=0..n 1/binomial(n,k). A46825

Pseudoprimes to base 7. A5938

Nonprimes k such that 3^k == 3 (mod k). A122780

Euler pseudoprimes to base 3: composite integers such that abs(3^{(n - 1}/2)) == 1 mod n. A262051

Base-3 Euler-Jacobi pseudoprimes. A48950

Table T(n,k) by antidiagonals. T(n,k) is the number of primitive (=aperiodic) k-ary words with length less than or equal to n (n,k >= 1). A143326

Composite numbers n with the property that φ(n) divides (n-1)². A173703

Composite numbers k == 1, 11 (mod 12) such that 3^(k-1/2) == 1 (mod k). A375917