Properties of the Number 70209

Seventy Thousand Two Hundred Nine

Basics

Value: 70208 → 70209 → 70210

Parity: odd

Prime: No

Previous Prime: 70207

Next Prime: 70223

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 29 × 269

Divisors: 1, 3, 9, 29, 87, 261, 269, 807, 2421, 7801

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001001001000001

Octal: 211101

Duodecimal: 34769

Hexadecimal: 11241

Square: 4929303681

Square Root: 264.9698096010185

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 7·2^k - 1 is prime. A1771

Consider triangle in which n-th row contains the smallest set of n consecutive numbers whose LCM is divisible by primorial(n) (the product of first n primes). Sequence contains the first column. A83130

a(n+1) is the smallest number > a(n) such that the digits of a(n)² are all (with multiplicity) contained in the digits of a(n+1)², with a(0)=2. A67975

Compositions of n into parts 3, 5 and 7. A245367

a(n) = (10n+1)*(10n+9). A1535

Numbers k such that 2·10^k + 5·R_k - 4 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A98930

Numbers n such that [A070080(n), A070081(n), A070082(n)] is an integer triangle with integer inradius. A70209