Properties of the Number 26378

Twenty-Six Thousand Three Hundred Seventy-Eight

Basics

Value: 26377 → 26378 → 26379

Parity: even

Prime: No

Previous Prime: 26371

Next Prime: 26387

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 11 ² × 109

Divisors: 1, 2, 11, 22, 109, 121, 218, 242, 1199, 2398

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110011100001010

Octal: 63412

Duodecimal: 13322

Hexadecimal: 670a

Square: 695798884

Square Root: 162.4130536625674

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

Primefree centuries (i.e., numbers k such that no prime exists between 100·k and 100·k+99). A181098

Numbers which form a prime by appending a 3-digit odd number and form no primes by appending any 1- or 2-digit odd number not beginning with 0. A91089

Number of ordered trees with n edges such that non-leaf vertices at even levels have outdegree 1 and those at odd levels have outdegree 2. A248100

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 5, with initial values 0,0,1,1. A25277

Numbers which form a prime by appending a 3-digit number and form no primes by appending 1 digit or 2 digits. A365813

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, 0, 2, 2. A25248

Select all integers from the list (p(k)-k)/τ(k), k>=1; p = A000041, τ = A000005. A141669

a(n) = the smallest number m such that gcd(σ(m), pod(m)) = n where σ(k) = the sum of the divisors of k (A000203) and pod(k) = the product of the divisors of k (A007955). A324527

Numbers whose sum of prime divisors equals the sum of square divisors. A390397

Ordered perimeters p of primitive Pythagorean triangles no side of which is squarefree. A329392