Properties of the Number 80982

Eighty Thousand Nine Hundred Eighty-Two

Basics

Value: 80981 → 80982 → 80983

Parity: even

Prime: No

Previous Prime: 80963

Next Prime: 80989

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 11 × 409

Divisors: 1, 2, 3, 6, 9, 11, 18, 22, 33, 66

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110001010110

Octal: 236126

Duodecimal: 3AA46

Hexadecimal: 13c56

Square: 6558084324

Square Root: 284.5733648815363

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

Coefficients of 1/(∑_k>=0 round((k+1)*r)(-x)^k), where r = 9/7. A289916

Number of binary strings of length n with no substrings equal to 0001 or 1100. A164400

Numbers such that the decimal digits of σ(n) are a permutation of those of σ(n)-n. A277114

Rank of first single 1 in A000002 such that A249949 takes the value n. A249952

Smallest k such that the k-th triangular number has n² as divisor. A80982

Smallest k such that A073259(k)=n or 0 if there is no such value; the first number of which length of fixed-point-list terminated by k-th composite number equals n. A73323