Properties of the Number 30500

Thirty Thousand Five Hundred

Basics

Value: 30499 → 30500 → 30501

Parity: even

Prime: No

Previous Prime: 30497

Next Prime: 30509

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 ³ × 61

Divisors: 1, 2, 4, 5, 10, 20, 25, 50, 61, 100

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111011100100100

Octal: 73444

Duodecimal: 15798

Hexadecimal: 7724

Square: 930250000

Square Root: 174.64249196572982

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) is the difference between multiples of 5 with even and odd digit sum in base 4 in interval [0,4ⁿ). A212500

Number of permutations p of [n] with no fixed points and cyclic displacement of elements restricted by three: p(i)<>i and (i-p(i) mod n <= 3 or p(i)-i mod n <= 3). A260081

Place n equally spaced points around the circumference of a circle and then, for each pair of points, draw two distinct circles, whose radii are the same as the first circle, such that both points lie on their circumferences. The sequence gives the total number of (curved) edges formed. A371375

G.f. A(x) satisfies: A(x)² = A( x²/(1-10·x) ), with A(0) = 0. A264227

Number of twos minus number of ones in the first 2ⁿ entries of the Kolakoski sequence, A000002. A289323

Practical numbers z such that z² = x² + y² for some practical numbers·and y with gcd(x,y,z) = 4. A294112

For any k, the cumulative sum a(1) + a(2) + a(3) + ... + a(k) shares at least five digits with a(k). Lexicographically first sequence of positive integers without duplicate terms having this property. A326640

Number of up steps in all length n left factors of Dyck paths. A14314

Numbers k such that 27·2^k+1 is prime. A32363

Numbers k such that k and k² use only the digits 0, 2, 3, 5 and 9. A136891