Properties of the Number 19628

Nineteen Thousand Six Hundred Twenty-Eight

Basics

Value: 19627 → 19628 → 19629

Parity: even

Prime: No

Previous Prime: 19609

Next Prime: 19661

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 7 × 701

Divisors: 1, 2, 4, 7, 14, 28, 701, 1402, 2804, 4907

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110010101100

Octal: 46254

Duodecimal: B438

Hexadecimal: 4cac

Square: 385258384

Square Root: 140.09996431120175

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

Aliquot sequence starting at 276. A8892

a(n) = n * ∑_d∣n binomial(d+2,3)/d. A343544

Number of unlabeled rigid interval posets with n non-maximal and 2 maximal elements. A194530

Numbers that appear exactly five times in A101402. (Also indices of fives in A101403.). A129117

a(n) = 25·n² + n. A173089

Triangle read by rows: T(n,m) (n>=0, 1 <= m <= n+1) = number of unlabeled rigid interval posets with n non-maximal and m maximal elements. A193344

Expansion of a modular function for Gamma₀(14). A2509

a(n) = 3ⁿ - (n+1)*(n+2)/2. A61982

Triangle read by rows: T(n,k) is the number of ternary words of length n on {0,1,2}, having k isolated 0's (n >= 0, k >= 0). A120924

a(n) = 100·n² + 2·n. A158127