Properties of the Number 30730

Thirty Thousand Seven Hundred Thirty

Basics

Value: 30729 → 30730 → 30731

Parity: even

Prime: No

Previous Prime: 30727

Next Prime: 30757

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 7 × 439

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 439, 878

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100000001010

Octal: 74012

Duodecimal: 1594A

Hexadecimal: 780a

Square: 944332900

Square Root: 175.29974329701685

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

Numbers k such that σ(k) = σ(k+8). A15876

Number of binary operations on an n-set that are commutative and associative; labeled commutative semigroups. A23815

Numbers whose squares remain squares when prepended with 5 and appended with 25 in base 10. A249971

a(n) = a(n-1) + floor((a(n-2) + a(n-3))/2), with a(n)=1 for n < 3. A214041

Triangle read by rows: T(n,k) is the number of labeled semigroups with n elements whose center contains k elements. A391157

Integers k such that 2^k-1 has 0 as its second-most significant digit in base k. A385924

Number of nX4 0..1 arrays with each 1 adjacent to 2, 3 or 5 king-move neighboring 1s. A296959

Least k such that s(k)=n, where s=A030727. A30730