Properties of the Number 28207

Twenty-Eight Thousand Two Hundred Seven

Basics

Value: 28206 → 28207 → 28208

Parity: odd

Prime: No

Previous Prime: 28201

Next Prime: 28211

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 67 × 421

Divisors: 1, 67, 421, 28207

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110111000101111

Octal: 67057

Duodecimal: 143A7

Hexadecimal: 6e2f

Square: 795634849

Square Root: 167.94939714092456

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

Denominators of continued fraction convergents to sqrt(389). A41739

Number of 3X3 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2·n² (number of collections of 3 zero-sum 3-vectors with total modulus squared not more than 2·n², ignoring vector and component permutations). A192702

Expansion of (1 + x - x² - 6·x³)/(1 - x - 2·x² - 3·x³ - 4·x⁴). A268349

Trajectory of 7 under the map m -> A082010(m). A152199

Expansion of 1/((1-6x)(1-7x)(1-10x)(1-11x)). A28207