Properties of the Number -218700

Two Hundred Eighteen Thousand Seven Hundred

Basics

Value: -218701 → -218700 → -218699

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ⁷ × 5 ²

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110101011001001100

Octal: -653114

Duodecimal: -A6690

Hexadecimal: -3564c

Square: 47829690000

Square Root: 467.6537180435969

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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 of form 3ⁱ*10^j, with i, j >= 0. A25616

Fixed points of A225546. A225547

Triangle read by rows: number of hex trees with n edges and k branches of length 1 (0<=k<=n). A126321

Numbers m such that Product(1 + p_i) = Product(1 + e_i), where m = Product((p_i)^e_i). A272858

Achilles numbers with a primorial squarefree kernel that are not products of primorials. A386433

If p and q are twin primes then pq + 1 is always divisible by 3, except for (p,q)=(3,5). Sequence gives values of (pq + 1)/3. A165280

Totally multiplicative sequence with a(p) = 9*(p+3) for prime p. A167328

Triangle read by rows, 3^k*s₃(n, k) where s_m(n, k) are the Stirling-Frobenius cycle numbers of order m; n >= 0, k >= 0. A225477

Number of tilings of a 6 X 6 X n box using 6n bricks of shape 6 X 1 X 1. A233424

a(n) = 3^n-3*(binomial(n,3) + 3·binomial(n,2) + 9·n + 27). A384198