Properties of the Number 28150

Twenty-Eight Thousand One Hundred Fifty

Basics

Value: 28149 → 28150 → 28151

Parity: even

Prime: No

Previous Prime: 28123

Next Prime: 28151

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 ² × 563

Divisors: 1, 2, 5, 10, 25, 50, 563, 1126, 2815, 5630

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110111110110

Octal: 66766

Duodecimal: 1435A

Hexadecimal: 6df6

Square: 792422500

Square Root: 167.77961735562516

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

Number of nonnegative solutions to x² + y² + z² <= n². A604

a(1) = 1; for n > 1, a(n) = 4·a(A252463(n)) + (n mod 4). A292384

Consider the version of the Collatz or 3x+1 problem where x -> x/2 if·is even, x -> (3x+1)/2 if·is odd. Define the stopping time of·to be the number of steps needed to reach 1. Sequence gives the number of integers·with stopping time n. A60322

Self-convolution of numbers of trees on n nodes. A6706

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 299", based on the 5-celled von Neumann neighborhood. A271154

Number of permutations of [n] avoiding {4231, 1423, 1234}. A294765

Total number of leaves and degree-1 roots in the rooted trees of order n. A95337

Number of 3X(n+1) 0..3 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors. A205660

a(0)=a(1)=0; for n>1, a(n) = numerator( r(n) ), where r(n) = r(n-1)+r(n-2)+A027641(n-2)/A027642(n-2) and r(0)=r(1)=a(0). A227500

Expansion of 1/((1-4x)(1-7x)(1-9x)(1-11x)). A28150