Properties of the Number 11838

Eleven Thousand Eight Hundred Thirty-Eight

Basics

Value: 11837 → 11838 → 11839

Parity: even

Prime: No

Previous Prime: 11833

Next Prime: 11839

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 1973

Divisors: 1, 2, 3, 6, 1973, 3946, 5919, 11838

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111000111110

Octal: 27076

Duodecimal: 6A26

Hexadecimal: 2e3e

Square: 140138244

Square Root: 108.80257349897566

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 which are the sum of their proper divisors containing the digit 9. A59468

Denominators of successive convergents to continued fraction 1/(2+2/(3+3/(4+4/(5+5/(6+6/(7+7/(8+8/9+...))))))). A53520

Least positive k such that k·Zⁿ + 1 is prime, where Z = 10¹⁰⁰+267, the first prime greater than a googol. A108344

Smallest m such that A123699(m) = n. A123700

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,9. A64241

Triangle, read by rows, where row n equals the inverse binomial transform of column n in the rectangular table A124530. A124539

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 291", based on the 5-celled von Neumann neighborhood. A271131

a(n) = the smallest k such that Fibonacci(k) begins and ends with n, where Fibonacci(k) > n, or -1 if there are none. A374026

A leading coefficient adjusted symmetrical triangle of polynomial coefficients based on:p(x,n)=Sum[k!*Binomial[x, k], {k, 0, n}]. A176664

a(0) = 0; for n > 0, a(n) is the number of terms prior to the term a(n-1-a(n-1)) that equal a(n-1-a(n-1)). A366548