Properties of the Number 15309

Fifteen Thousand Three Hundred Nine

Basics

Value: 15308 → 15309 → 15310

Parity: odd

Prime: No

Previous Prime: 15307

Next Prime: 15313

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁷ × 7

Divisors: 1, 3, 7, 9, 21, 27, 63, 81, 189, 243

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11101111001101

Octal: 35715

Duodecimal: 8A39

Hexadecimal: 3bcd

Square: 234365481

Square Root: 123.72954376380768

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

Triangular array: the fusion of (x+1)ⁿ and (x+2)ⁿ; see Comments for the definition of fusion. A193722

Numbers that are the sum of 7 positive 7th powers. A3374

a(n) = σ(n) * A003961(n), where A003961 shifts the prime factorization of n one step towards larger primes, and σ is the sum of the divisors of n. A341529

Numbers of the form 3ⁱ*7^j with i, j >= 0. A3594

a(n) = n·3ⁿ. A36290

Products of the 7th power of a prime and a distinct prime (p⁷*q). A179664

Numbers whose prime factors are 3 and 7. A33850

a(n) = 7·3ⁿ. A5032

Stirling2 triangle with scaled diagonals (powers of 3). A75498

Triangle whose (i,j)-th entry is binomial(i,j)*3^i-j*3^j. A38221