Properties of the Number 19684

Nineteen Thousand Six Hundred Eighty-Four

Basics

Value: 19683 → 19684 → 19685

Parity: even

Prime: No

Previous Prime: 19681

Next Prime: 19687

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 7 × 19 × 37

Divisors: 1, 2, 4, 7, 14, 19, 28, 37, 38, 74

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110011100100

Octal: 46344

Duodecimal: B484

Hexadecimal: 4ce4

Square: 387459856

Square Root: 140.29967925836468

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

a(n) = 3ⁿ + 1. A34472

a(n) = ∑_{d divides n} (-1)^{d + n/d} * d⁹. A321565

a(n) = n³ + 1. A1093

Numbers that are the sum of 2 positive 9th powers. A3391

Numbers that are the sum of 4 nonzero 8th powers. A3382

a(n) = sigma₉(n), the sum of the 9th powers of the divisors of n. A13957

Aliquot sequence starting at 276. A8892

Numbers k such that k² is palindromic in base 3. A29984

Square array A(n,k), n>=1, k>=0, read by antidiagonals, where column k is the expansion of ∑_j>=1 (2·j - 1)^k*x^2·j-1/(1 - x^2·j-1). A285425

Sums of two powers of 3. A55235