Properties of the Number 27439

Twenty-Seven Thousand Four Hundred Thirty-Nine

Basics

Value: 27438 → 27439 → 27440

Parity: odd

Prime: No

Previous Prime: 27437

Next Prime: 27449

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 23 × 1193

Divisors: 1, 23, 1193, 27439

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110101100101111

Octal: 65457

Duodecimal: 13A67

Hexadecimal: 6b2f

Square: 752898721

Square Root: 165.64721549123607

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

Centered tetrahedral numbers. A5894

a(n) = (((6ⁿ mod 5ⁿ) mod 4ⁿ) mod 3ⁿ) mod 2ⁿ. A64855

Numerators of a(n+1) = ∑_k=0..n a'(k²/n), where a(0) = a(1) = 1; and a'(x) = a(x) if·is an integer and is linearly interpolated otherwise. A71298

C(2·n+4,4)-C(2·n,4). A85474

a(n) is the smallest integer k > 1 such that k cannot be expressed as a sum of distinct earlier terms nor is a multiple of any earlier term. A330070

a(n) = 784·n - 1. A158399

Sum of the largest parts of the partitions of 4n into 4 parts. A239667

Composite terms in A330070. A330126

Expansion of (1-x)^-1/(1-2·x+2·x²+x³). A77861

Number computed by Wolfram's 3-state 2-symbol Turing machine 600720 when started with n on the tape. A393506