Properties of the Number 19390

Nineteen Thousand Three Hundred Ninety

Basics

Value: 19389 → 19390 → 19391

Parity: even

Prime: No

Previous Prime: 19387

Next Prime: 19391

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 7 × 277

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 277, 554

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101110111110

Octal: 45676

Duodecimal: B27A

Hexadecimal: 4bbe

Square: 375972100

Square Root: 139.2479802366986

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

Weird numbers: abundant (A005101) but not pseudoperfect (A005835). A6037

Unitary weird numbers: unitary abundant (A034683) but not unitary pseudoperfect (A293188). A64114

Even 10-gonal (or decagonal) numbers. A28994

Expansion of ∏_m>=1 ((1+q^2·m-1)/(1+q^2·m))⁵. A29842

Bi-unitary weird numbers: bi-unitary abundant numbers (A292982) that are not bi-unitary pseudoperfect (A292985). A292986

Infinitary weird numbers: infinitary abundant numbers (A129656) that are not infinitary pseudoperfect numbers (A306983). A306984

Number of ways to write n as an ordered sum of 7 squarefree numbers. A341067

Nonexponential weird numbers: nonexponential abundant numbers (A348604) that are not equal to the sum of any subset of their nonexponential divisors. A348631

The sum of all the entries in an n X n Cayley table for multiplication in Z_n. A160255

Number of (w,x,y) with all terms in {0,...,n} and 2*|w-x| > max(w,x,y) - min(w,x,y). A213045