Properties of the Number 38870

Thirty-Eight Thousand Eight Hundred Seventy

Basics

Value: 38869 → 38870 → 38871

Parity: even

Prime: No

Previous Prime: 38867

Next Prime: 38873

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 13 ² × 23

Divisors: 1, 2, 5, 10, 13, 23, 26, 46, 65, 115

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001011111010110

Octal: 113726

Duodecimal: 1A5B2

Hexadecimal: 97d6

Square: 1510876900

Square Root: 197.1547615453403

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..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal. A232065

Numbers n = p·q, where n, p, and q together contain all 10 digits at least once. A253172

0-sequence of reduction of the lower Wythoff sequence by x² -> x+1. A192300

Number of nX4 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal. A232061

Number of nX7 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal. A232064

Values n, where n = p·q, and n, p, and q together contain all 10 digits at least once, and no digit is in more than one of n, p or q. A253173

G.f. satisfies: A(x) = 1 + x·A(x)³ + x²*A(x)² + x³*A(x). A200029

Irregular triangle read by rows: T(n,k) = number of orbits of order exactly k under doubling map which remain in a semicircle, with k dividing n. A38870

Number of (4+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction. A250946