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Properties of the Number 1218

One Thousand Two Hundred Eighteen

Basics

Value: 1217 → 1218 → 1219

Parity: even

Prime: No

Previous Prime: 1217

Next Prime: 1223

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 7 × 29

Divisors: 1, 2, 3, 6, 7, 14, 21, 29, 42, 58

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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8509 Try Today's Challenge

Representations

Binary: 10011000010

Octal: 2302

Duodecimal: 856

Hexadecimal: 4c2

Square: 1483524

Square Root: 34.899856733230294

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

Coordination sequence T1 for Zeolite Code ABW and ATN. A8000
Triangular matchstick numbers: a(n) = 3·n*(n+1)/2. A45943
Products of exactly four distinct primes. A46386
Describe n. Also called the "Say What You See" or "Look and Say" sequence LS(n). A45918
Coordination sequence for "ubt" 3D uniform tiling. A299291
Numbers that are the sum of 8 positive 5th powers. A3353
Numbers that are the sum of 9 positive 5th powers. A3354
Numbers that are the sum of 4 nonzero 4th powers. A3338
Number of compositions (p1, p2, p3, ...) of n with 1 <= pi <= i for all i. A8930
Expansion of ∑k>=2 xk*(k+3/2) / ∏j=1..k (1 - xj). A318029