Properties of the Number 7290

Seven Thousand Two Hundred Ninety

Basics

Value: 7289 → 7290 → 7291

Parity: even

Prime: No

Previous Prime: 7283

Next Prime: 7297

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

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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

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

Sums of two powers of 3. A55235

a(n) = floor(n/4)*floor((n+1)/4)*floor((n+2)/4)*floor((n+3)/4). A8233

Numbers of form 9ⁱ*10^j, with i, j >= 0. A25635

Numbers which divided by the sum of their digits (Harshad or Niven numbers) give integers which are also divisible by the sum of their digits (until a single-digit Harshad remains). A114440