Properties of the Number 19875

Nineteen Thousand Eight Hundred Seventy-Five

Basics

Value: 19874 → 19875 → 19876

Parity: odd

Prime: No

Previous Prime: 19867

Next Prime: 19889

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ³ × 53

Divisors: 1, 3, 5, 15, 25, 53, 75, 125, 159, 265

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110110100011

Octal: 46643

Duodecimal: B603

Hexadecimal: 4da3

Square: 395015625

Square Root: 140.97872179871683

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

Positions of 3's in A264977; positions of 6's in A277330. A277713

Matrix square of triangle A113340. A113345

G.f.: A(x) = exp( ∑_n>=1 3·A038500(n) * xⁿ/n ), where A038500 is the highest power of 3 dividing n. A161809

Column 2 of triangle A113345, also equals column 0 of A113350⁵. A113348

Composites that are the sum of two, three, four and five consecutive composite numbers. A151745

Expansion of φ(x) * χ(x²)⁴ in powers of·where φ(), χ() are Ramanujan θ functions. A260514

Number of integer partitions of n with exactly as many ones as the next greatest multiplicity. A382303

Denominators of continued fraction convergents to sqrt(718). A42383

Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order. A227259

Expansion of φ(x²) * χ(x)⁴ in powers of·where φ(), χ() are Ramanujan θ functions. A260515