Properties of the Number 26949

Twenty-Six Thousand Nine Hundred Forty-Nine

Basics

Value: 26948 → 26949 → 26950

Parity: odd

Prime: No

Previous Prime: 26947

Next Prime: 26951

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 691

Divisors: 1, 3, 13, 39, 691, 2073, 8983, 26949

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110100101000101

Octal: 64505

Duodecimal: 13719

Hexadecimal: 6945

Square: 726248601

Square Root: 164.16150584104668

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

Number of partitions p of n such that floor(mean(p)) or ceiling(mean(p)) is a part. A241344

a(n) = 22·n² - 1. A158540

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2)², where a(0) = 1, a(1) = 3, b(0) = 2, and (a(n)) and (b(n)) are increasing complementary sequences. A296258

a(n) = a(n-1)+a(n-2)-Floor(a(n-3)/2)-Floor(a(n-8)/2); initial terms are 0, 1, 1, 2, 3, 5, 7, 11. A173199

T(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098. A26101

0 followed by -(n+1)*A226158(n). A243868

a(n) = ∑_k=0..n-3 T(n,k) * T(n,k+3), with T given by A026374. A26949