Properties of the Number 11826

Eleven Thousand Eight Hundred Twenty-Six

Basics

Value: 11825 → 11826 → 11827

Parity: even

Prime: No

Previous Prime: 11821

Next Prime: 11827

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴ × 73

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 73, 81

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10111000110010

Octal: 27062

Duodecimal: 6A16

Hexadecimal: 2e32

Square: 139854276

Square Root: 108.74741376235114

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

Multiples of 18 containing a 18 in their decimal representation. A121038

Numbers k such that k² contains exactly 9 different digits. A54037

Numbers k such that k divides 2^k+1 - 2. A14741

Numbers whose square is a zeroless pandigital number (i.e., use the digits 1 through 9 once). A71519

Array read by antidiagonals: T(m,n) = number of irredundant sets in the grid graph P_m X P_n. A286868

Riordan array (1/(1+x), x(1-x)/(1+x)²). A110511

Number of symmetry classes of 3 X 3 semimagic squares with distinct positive values < n. A173723

Expansion of (5-8·x-15·x²+4·x³+4·x⁴)/(1-2·x-5·x²+2·x³+4·x⁴+x⁵). A189236

Numbers k such that any two consecutive decimal digits of k² differ by 1 after arranging the digits in decreasing order. A370362

Numbers k such that 11·2^k - 1 is prime. A1772