Properties of the Number -19691

Nineteen Thousand Six Hundred Ninety-One

Basics

Value: -19692 → -19691 → -19690

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: Yes

Factorization: 7 × 29 × 97

Divisors: 1, 7, 29, 97, 203, 679, 2813, 19691

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110011101011

Octal: -46353

Duodecimal: -B48B

Hexadecimal: -4ceb

Square: 387735481

Square Root: 140.3246236410417

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

E.g.f. satisfies A(x) * log(A(x)) = x·exp(-x). A357247

Quotient (A003961(k)-σ(k)) / (2·k-A003961(k)) computed for those k for which this quotient is an integer, where A003961 is fully multiplicative with a(prime(i)) = prime(i+1). A379217

Table read by rows. T(n, k) = (-1)^{n - k} * ∑_j=k..n binomial(n, j) * A354794(j, k) * j^{n - j}. A359759

Number of parts in all partitions of n into distinct parts. A15723

Numbers that are the sum of 9 positive 9th powers. A3398

Numbers that are the sum of 11 positive 8th powers. A3389

a(n) = 3·9ⁿ + 8. A224790

a(n) = smallest number that leads to a new cycle under the base-3 Kaprekar map of A164993. A165009

Number of ordered rooted trees with n nodes, most of which are leaves. A358585

Positive integers of the form (6·m² + 1)/11. A179337