Properties of the Number 26129

Twenty-Six Thousand One Hundred Twenty-Nine

Basics

Value: 26128 → 26129 → 26130

Parity: odd

Prime: No

Previous Prime: 26119

Next Prime: 26141

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 17 × 29 × 53

Divisors: 1, 17, 29, 53, 493, 901, 1537, 26129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011000010001

Octal: 63021

Duodecimal: 13155

Hexadecimal: 6611

Square: 682724641

Square Root: 161.64467204334326

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

a(n) = n³ - n² + n - 1 = (n-1) * (n² + 1). A62158

a(n) = ∑_k=1..n floor(n/k)³. A318742

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7. A252167

Numbers that set a record for occurrences as longest side of a primitive Heronian triangle. A306626

Structured truncated octahedral numbers. A100155

a(n) = A000041(n) + n·A032741(n). A168015

Expansion of x/((4·x-1)*(2·x-1)*(x+1)). A109765

Numerators of the partial sums of the reciprocals of the 3rd Piltz function d₃(n) (A007425). A379357

Non-semiprime composite numbers e such that there is no 0<a<b<c<d<e for which a! * b! * c! * d! * e! is a perfect square. A392333

a(1) = 1, then smallest number not included earlier such that a(n)*a(n+1) + 1 is an n-th power. A83205