Properties of the Number 26180

Twenty-Six Thousand One Hundred Eighty

Basics

Value: 26179 → 26180 → 26181

Parity: even

Prime: No

Previous Prime: 26177

Next Prime: 26183

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 7 × 11 × 17

Divisors: 1, 2, 4, 5, 7, 10, 11, 14, 17, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011001000100

Octal: 63104

Duodecimal: 13198

Hexadecimal: 6644

Square: 685392400

Square Root: 161.80234856144702

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

Numbers k such that 3^k - 8 is prime. A217135

Numbers k which have a factorization k = f1·f2*...*fr where the digits of {k, f1, f2, ..., fr} together give 0,1,...,9 exactly once. A370970

a(n) = 2·n*(n+1)*(n+2)/3. A210440

a(n) is the smallest nonnegative integer k where exactly n pairs of positive integers (x, y) exist such that x² + 19·y² = k. A374161

a(n) = -(1/120)*n*(n - 3)*(n - 6)*(n² - 21·n + 8). A319931

Expansion of ∏_k>=1 (1-x^k)²⁸. A10833

Composite a(n) divided by the palindromic sum of its prime factors is a palindrome (counted with multiplicity). A46361

a(n) in base 13 is a repdigit. A48337

Number of subgroups of the group GL(2,Z_n) of invertible 2 X 2 matrices mod n (sequence A000252). A66514

Triangle of 3-Narayana numbers, N(n,k), for n >= 1, 0 <= k <= 2n-2. A87647