Properties of the Number 26950

Twenty-Six Thousand Nine Hundred Fifty

Basics

Value: 26949 → 26950 → 26951

Parity: even

Prime: No

Previous Prime: 26947

Next Prime: 26951

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 ² × 7 ² × 11

Divisors: 1, 2, 5, 7, 10, 11, 14, 22, 25, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100101000110

Octal: 64506

Duodecimal: 1371A

Hexadecimal: 6946

Square: 726302500

Square Root: 164.16455159382002

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

Recurrence a(n+2) = ∑_k=0..n binomial(n,k)*a(k)*a(n+1-k) with a(0)=1, a(1)=-2. A289068

Triangular array of coefficients of polynomials q(n,k) defined in Comments. A248669

Triangle giving a(n,k) = number of (n,k) labeled Greg trees (n >= 2, 0 <= k <= n-2). A48159

a(n) = 22·n². A195323

Sum of the squares of the parts in the partitions of n into two distinct parts. A294286

Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = 1. A380889

Logarithm of triangular matrix A102220, which equals [2·I - A008459]^-1. A102222

a(n) = A005940(1+A163511(n)). A335422

Triangular array of coefficients of polynomials q defined in Comments; the coefficients are written in the order of decreasing powers of x. A248670

Number of Dyck paths of semilength n such that each positive level has exactly four peaks. A288320