Properties of the Number 28447

Twenty-Eight Thousand Four Hundred Forty-Seven

Basics

Value: 28446 → 28447 → 28448

Parity: odd

Prime: Yes

Previous Prime: 28439

Next Prime: 28463

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 28447

Divisors: 1, 28447

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111100011111

Octal: 67437

Duodecimal: 14567

Hexadecimal: 6f1f

Square: 809231809

Square Root: 168.66238466237812

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

Primes that remain prime through 3 iterations of function f(x) = 2x + 3. A23273

Primes whose digit reversal is a pentagonal number (A000326). A115706

Alternate binomial partial sums of binomial(2n,n)*binomial(3n,n) (A006480). A152297

Primes p that p//13 and p//31 are consecutive primes. A176601

G.f. A(x) satisfies A(x) = A(x³)/A(x²) + A(x)². A377100

Primes prime(k) such that prime(k)*k falls between twin primes. A80174

a(n) is the first prime p such that the concatenations of n consecutive primes, starting with p, in both forward and backward directions, are prime. A384958

The number of lattice points in the 2D plane contained between the curve y=x²/4 and the line y=n², inclusive, where n is a positive integer. A385730

Number of perfect matchings in graph P₂ X P₃ X P_n. A28447

Noncube factors k > 0 such that k·x³ + 1 produces a new minimum of its Hardy-Littlewood constant. A342566