Properties of the Number -21849

Twenty-One Thousand Eight Hundred Forty-Nine

Basics

Value: -21850 → -21849 → -21848

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7283

Divisors: 1, 3, 7283, 21849

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101010101011001

Octal: -52531

Duodecimal: -10789

Hexadecimal: -5559

Square: 477378801

Square Root: 147.81407240178453

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

a(n) = (4ⁿ + 11)/3. A163868

Coefficients in the power series A(x) such that: A(x)⁴ = ∑_n=-oo..+oo xⁿ * (1 - xⁿ⁺¹)ⁿ⁺¹ * A(x)ⁿ. A357204

a(0) = 3, a(1) = 5, a(2) = 1, and a(n) = (2^{1 + n} - 11*(-1)ⁿ)/3 for n > 2. A115335

Total number of ON cells in the "Ulam-Warburton" two-dimensional cellular automaton of A147562 after A048645(n) generations. A255264

Right edge of triangle A297497. A297498

Smallest m such that A065623(m) = n. A65624

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 90 ones. A31858

a(1) = 3; a(n+1) = a(n)-th nonprime, where nonprimes begin at 0. A25000

a(n) + a(n+1) = 2ⁿ for n >= 0 with a(0) = 4. A352692