Properties of the Number 18030

Eighteen Thousand Thirty

Basics

Value: 18029 → 18030 → 18031

Parity: even

Prime: No

Previous Prime: 18013

Next Prime: 18041

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 601

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 601, 1202

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100011001101110

Octal: 43156

Duodecimal: A526

Hexadecimal: 466e

Square: 325080900

Square Root: 134.27583550289307

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

Number of distinct topologies on an n-set that have exactly 10 open sets. A281778

Sum of the fourth largest parts in the partitions of n into 7 parts. A308930

Expansion of 3·q^1/3 * φ(q) * ψ(q⁶) / c(q) in powers of·where φ(), ψ() are Ramanujan θ functions and c() is a cubic AGM θ function. A233037

G.f.: ∏_k>=1 (1 + x^k*(k+1/2)) / (1 - x^k). A280421

Values of k such that {P(k), P(k+1), ..., P(k+6)} are all prime numbers, where P(k) = 4·k² - 154·k + 1523. A90111

Triangle read by rows. Each term of the triangle is positive and distinct. In row k are the next k least numbers such that the sum of any one number from each of the first k rows is a prime number. A359668

Powers of cube root of 19 rounded down. A18030

Powers k^m, m > 1, where k is neither squarefree nor squareful and A006530(k) < A053669(k). A389394

Start with the sequence S(1) = [0], and for n >= 1 define S(n+1) to equal the concatenation of S(n) with the RUNS transform of S(n) when read in reverse order. This sequence is the limit of that process as n goes to infinity. A306346