Properties of the Number -7290

Two Hundred Ninety

Basics

Value: -7291 → -7290 → -7289

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁶ × 5

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -1110001111010

Octal: -16172

Duodecimal: -4276

Hexadecimal: -1c7a

Square: 53144100

Square Root: 85.38149682454625

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Irregular triangle read by rows: mean version of Girard-Waring formula A210258, for m = 3 data values. A287768

Fibonacci matrix read by antidiagonals. (Inverse of A136158.) A164948

A Chebyshev polynomial triangle of the first kind defined by T(n+1,x) = 3x·T(n,x) - T(n-1,x). A136159

Coefficient array for the third power of the monic integer Chebyshev polynomials 2·T(2·n+1,x/2)/x as a function of x². A219235

Expansion of g.f.: (1+x)/(1-9·x). A3952

a(n) = n·3^n-4. A6234

a(n) = 10·n². A33583

9th binomial transform of (0,0,1,0,0,0,...). A81139

Numbers whose prime factors span an initial interval of prime numbers and whose sequence of prime multiplicities is a palindrome. A317087

Numbers of form 3ⁱ*10^j, with i, j >= 0. A25616