Properties of the Number -26247

Twenty-Six Thousand Two Hundred Forty-Seven

Basics

Value: -26248 → -26247 → -26246

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 673

Divisors: 1, 3, 13, 39, 673, 2019, 8749, 26247

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011010000111

Octal: -63207

Duodecimal: -13233

Hexadecimal: -6687

Square: 688905009

Square Root: 162.00925899466364

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

Numbers that are the sum of 7 nonzero 8th powers. A3385

a(n) = a(n-1) + a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1, a(2) = 2, and a(3) = 1. A50043

a(n) = T(n,n-4), array T as in A055818. A55821

a(n) = ∑_{k=0..floor(n/2)} (k+1) * binomial(k,2*(n-2·k)). A392251

Numbers n such that p = n² + 2, p+2 and p+6 are consecutive primes. A86380

Numbers m such that 20·m + 1, 80·m + 1, 100·m + 1, and 200·m + 1 are all primes. A372186

Numbers n such that n²-9 is divisible by consecutive primes beginning with 2. A217277

Number of partitions of n such that m(2) > m(3), where m = multiplicity. A240065

Whitney transform of Jacobsthal numbers. A103819

Number of length-4 0..n arrays with no following elements larger than the first repeated value. A267472