Properties of the Number 12247

Twelve Thousand Two Hundred Forty-Seven

Basics

Value: 12246 → 12247 → 12248

Parity: odd

Prime: No

Previous Prime: 12241

Next Prime: 12251

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 37 × 331

Divisors: 1, 37, 331, 12247

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111111010111

Octal: 27727

Duodecimal: 7107

Hexadecimal: 2fd7

Square: 149989009

Square Root: 110.66616465749593

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

ATS: Add Then Sort (i.e., double previous term and then sort digits). A57615

a(n) = 8·n² + 2·n + 1. A188135

Positive numbers whose product of digits is 7 times their sum. A62384

Number of partitions of n into Lucas parts (A000032). A67593

Numbers n which are divisors of the number produced by concatenating (n-10), (n-9), (n-8), ... (n-1) in that order. A88872

a(n) = n*(9·n-2). A13656

a(n) = (p² - p + 2)/2 for p = prime(n); number of squares modulo p². A72205

Sum of the first n Sophie Germain primes. A66819

a(0) = 0, a(1) = a(2) = 1, a(3) = 2, a(4) = 4, for n>3: a(n+1) = SORT[ a(n) + a(n-1) + a(n-2) + a(n-3) + a(n-4)], where SORT places digits in ascending order and deletes 0's. A108565

Eigensequence of triangle A168316. A168317