Properties of the Number 26986

Twenty-Six Thousand Nine Hundred Eighty-Six

Basics

Value: 26985 → 26986 → 26987

Parity: even

Prime: No

Previous Prime: 26981

Next Prime: 26987

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 103 × 131

Divisors: 1, 2, 103, 131, 206, 262, 13493, 26986

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100101101010

Octal: 64552

Duodecimal: 1374A

Hexadecimal: 696a

Square: 728244196

Square Root: 164.27416108445053

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

Tribonacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3), with a(0) = 1, a(1) = 1, a(2) = 0. A81172

Sum of first n terms divides the concatenation of the first n terms. A166064

a(n) = (3ⁿ⁺²+11)/2 - 5·2ⁿ⁺¹ + 2·n. A298564

Base-9 palindromes that start with 4. A43031

Self-convolution of array T given by A026681. A26986

Triangle read by rows: t(n,k)=Binomial[n, k] + Binomial[k*(n - k), n]. A155798