Properties of the Number -17850

Seventeen Thousand Eight Hundred Fifty

Basics

Value: -17851 → -17850 → -17849

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 ² × 7 × 17

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100010110111010

Octal: -42672

Duodecimal: -A3B6

Hexadecimal: -45ba

Square: 318622500

Square Root: 133.60389215887386

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 k such that 4·k-1, 8·k-1, 16·k-1 and 32·k-1 are all primes. A101794

T(n,k)=Number of (n+3)X(k+3) binary arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock. A188105

Expansion of ∑_n>=0 (qⁿ / ∏_k=1..n+4 (1 - q^k)). A35300

Numbers k such that k+1, k²+1 and k⁴+1 are primes. A70325

Number of ways to write n as an ordered sum of 5 squarefree numbers. A341065

Triangle of coefficients of q in e.g.f. that satisfies: A(x,q) = exp( q·x*A(q·x,q) ), read by rows of [n*(n-1)/2 + 1] terms in row n for n>=0. A126265

Numbers m such that A188999(A188999(m)) = k·m for some k where A188999 is the bi-unitary σ function. A318175

a(n) = ∑_k=0..n binomial(3·n+k-1,k) * binomial(3·n+k,n-k). A379025

Numbers k such that ω(k) = 5 and the largest prime factor of k equals the sum of its remaining distinct prime factors, where ω(k) = A001221(k). A383729

a(n) = n*(n+1)*(n²+5·n+18)/24. A51744