Properties of the Number 40281

Forty Thousand Two Hundred Eighty-One

Basics

Value: 40280 → 40281 → 40282

Parity: odd

Prime: No

Previous Prime: 40277

Next Prime: 40283

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 29 × 463

Divisors: 1, 3, 29, 87, 463, 1389, 13427, 40281

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110101011001

Octal: 116531

Duodecimal: 1B389

Hexadecimal: 9d59

Square: 1622558961

Square Root: 200.70127054904262

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

T(n,k)=Number of length n+4 0..k arrays with some pair in every consecutive five terms totalling exactly k. A246892

a(n) = ((1+4·sqrt(2))*(1+2·sqrt(2))ⁿ + (1-4·sqrt(2))*(1-2·sqrt(2))ⁿ)/2. A164602

Indices where the cumulative sum of cos(2k+1)^2k+1 reaches a record high value. A389559

A transform of the central binomial coefficients. A186335

Number of (w,x,y) with all terms in {0,...,n} and 2∣w-x| >= max(w,x,y)-min(w,x,y). A213388

Number of length 1+4 0..n arrays with some pair in every consecutive five terms totalling exactly n. A246893

Number of times the n-th prime appears among the decimal digits of 2^2ⁿ + 1, the Fermat numbers. A78671

Floor-Sqrt transform of ordered Bell numbers (A000670). A192679

Continued fraction for sqrt(299). A40281