Properties of the Number 40015

Forty Thousand Fifteen

Basics

Value: 40014 → 40015 → 40016

Parity: odd

Prime: No

Previous Prime: 40013

Next Prime: 40031

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 53 × 151

Divisors: 1, 5, 53, 151, 265, 755, 8003, 40015

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110001001111

Octal: 116117

Duodecimal: 1B1A7

Hexadecimal: 9c4f

Square: 1601200225

Square Root: 200.037496485034

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 nXk 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. A299806

Let an integer with k+1 digits as n = d(k)*10^k + d(k-1)*10^k-1 + ... + d(0)*10⁰ and consider the transform T(n) = k·10^d(k) + (k-1)*10^d(k-1) + ... + 0·10^d(0). a(n) gives the fixed points of the transform T(n). A226767

Number of n X 5 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. A299803

Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. A299804

Continued fraction for sqrt(20). A40015