Properties of the Number 30620

Thirty Thousand Six Hundred Twenty

Basics

Value: 30619 → 30620 → 30621

Parity: even

Prime: No

Previous Prime: 30593

Next Prime: 30631

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 × 1531

Divisors: 1, 2, 4, 5, 10, 20, 1531, 3062, 6124, 7655

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111011110011100

Octal: 73634

Duodecimal: 15878

Hexadecimal: 779c

Square: 937584400

Square Root: 174.9857137025763

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) = 1·2*3 - 4·5*6 + 7·8*9 - 10·11·12 + 13·14·15 - ... + (up to n). A319543

T(n,k)=Number of nXk 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X(k+1) binary array having a sum of zero, with rows and columns of the latter in lexicographically nondecreasing order. A227125

Complement of A340745. A340824

a(n) = (-3*(-1)ⁿ + ∑_k>=0 A000108(k)*kⁿ/6^k)/sqrt(3), where A000108 are Catalan numbers. A260701

a(0) = 1, a(n) = 42·n² + 2 for n>0. A10023

a(n) = 25·n² - 5. A158446

Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of zero, with rows and columns of the latter in lexicographically nondecreasing order. A227124

Number of length n+5 0..2 arrays with no disjoint triples in any consecutive six terms having the same sum. A247989

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 974", based on the 5-celled von Neumann neighborhood. A273853

Numbers n such that 215·2ⁿ-1 is prime. A50859