Properties of the Number -29380

Twenty-Nine Thousand Three Hundred Eighty

Basics

Value: -29381 → -29380 → -29379

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 13 × 113

Divisors: 1, 2, 4, 5, 10, 13, 20, 26, 52, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -111001011000100

Octal: -71304

Duodecimal: -15004

Hexadecimal: -72c4

Square: 863184400

Square Root: 171.40595088852663

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 permutations of [n] with no 3-term arithmetic progression. A3407

T(n,k) = number of (n+1) X (k+1) 0..2 arrays with no element greater than all horizontal neighbors or equal to all vertical neighbors. A239178

Numbers k that divide 4^k + 4. A15889

Triangle, read by rows, equal to the matrix cube of triangle P = A135880. A135888

a(n) = 2·n³ - 3·n² + 5. A152064

Practical numbers z such that z² = x² + y² for some practical numbers·and y with gcd(x,y,z) = 4. A294112

Number of discordant permutations. A565

Column 1 of triangle A135888, which equals the matrix cube of triangle A135880; also equals column 1 of triangle A135895. A135890

Triangle, read by rows, equal to R², the matrix square of R = A135894. A135895

Triangle read by rows: T(n,k) is the number of k-matchings in the C_n X P₂ graph (C_n is the cycle graph on n vertices and P₂ is the path graph on 2 vertices). A102079