Properties of the Number 27391

Twenty-Seven Thousand Three Hundred Ninety-One

Basics

Value: 27390 → 27391 → 27392

Parity: odd

Prime: No

Previous Prime: 27367

Next Prime: 27397

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 ² × 13 × 43

Divisors: 1, 7, 13, 43, 49, 91, 301, 559, 637, 2107

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110101011111111

Octal: 65377

Duodecimal: 13A27

Hexadecimal: 6aff

Square: 750266881

Square Root: 165.50226584551643

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 distinct values produced from sums and products of n unity arguments. A48249

a(n) = n*(n + a(n-1)) with a(0)=0. A30297

Numbers k such that lcm(1,2,3,...,k)/13 equals the denominator of the k-th harmonic number H(k). A112818

Add 1, multiply by 1, add 2, multiply by 2, etc.; start with 0. A19461

a(n) = ∑_0<j<n n³-j³. A206808

Expansion of 1/((1+x)*(1+2·x)*(1-3·x)). A249992

Sum over all partitions of n into distinct parts of the bitwise OR of the parts. A306924

Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) = n! * ∑_j=0..n j^k/j!. A337085

Numbers with two or more distinct prime factors such that the number and all its prime factors fall on a single straight line when they are plotted on a square spiral. A346294

Numbers k such that the odd part of (1+k) divides (1 + odd part of A034448(k)), where A034448 is unitary σ (usigma). A387418