Properties of the Number 30618

Thirty Thousand Six Hundred Eighteen

Basics

Value: 30617 → 30618 → 30619

Parity: even

Prime: No

Previous Prime: 30593

Next Prime: 30631

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁷ × 7

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111011110011010

Octal: 73632

Duodecimal: 15876

Hexadecimal: 779a

Square: 937461924

Square Root: 174.97999885701222

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

Cube of lower triangular normalized binomial matrix. A27465

Triangle of coefficients in expansion of (1+3·x)ⁿ. A13610

Expansion of 1/(1-3·x)⁵; 5-fold convolution of A000244 (powers of 3). A36217

a(n) = 3·2*1 - 6·5*4 + 9·8*7 - 12·11·10 + 15·14·13 - 18·17·16 + ... - (up to the n-th term). A319886

Number of meaningful differential operations of the n-th order on the space R⁸. A90993

Triangle T(n,k) read by rows, arising in enumeration of catafusenes. A24462

a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 2. Also a(n) = 3ⁿ*C(n-1), where C = A000108 (Catalan numbers). A25226

Triangle T(n,k) = T(n-1,k) + 3·T(n-2,k-1) for k = 0..floor(n/2), with T(0,0) = 1, T(n,k) = 0 for n or k < 0, read by rows. A304236

Number of 4-ary Lyndon words of length n with exactly five 1s. A124813

Square array T(n, k) = ∏_j=1..n A129862(k+1, j) with T(n, 0) = n!, read by antidiagonals. A156612