Properties of the Number 26990

Twenty-Six Thousand Nine Hundred Ninety

Basics

Value: 26989 → 26990 → 26991

Parity: even

Prime: No

Previous Prime: 26987

Next Prime: 26993

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 2699

Divisors: 1, 2, 5, 10, 2699, 5398, 13495, 26990

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100101101110

Octal: 64556

Duodecimal: 13752

Hexadecimal: 696e

Square: 728460100

Square Root: 164.28633540255257

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

24 'Reverse and Add' steps are needed to reach a palindrome. A65318

Sum of the largest parts in the partitions of n into 6 parts. A308873

a(n) = T(n, 2·n-7), T given by A027960. A27969

Denominators of continued fraction convergents to sqrt(345). A41653

Number of ways of placing n balls into boxes 1,2,... in such a way that any two adjacent boxes contain at least 4 balls. A257666

Smallest integer that is the sum of a prime and the square of a prime in exactly n ways. A381334

a(n) = n³ - floor( n/3 ). A2901

a(n) = A027011(2n, n+4). A27015

T(n,k)=Number of (n+2)X(k+2) 0..2 matrices with each 3X3 subblock idempotent. A224606

Hyperlucas number array T(r,n) = L(n)^r, read by ascending antidiagonals (r >= 0, n >= 0). A137176