Properties of the Number -19769

Nineteen Thousand Seven Hundred Sixty-Nine

Basics

Value: -19770 → -19769 → -19768

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 53 × 373

Divisors: 1, 53, 373, 19769

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110100111001

Octal: -46471

Duodecimal: -B535

Hexadecimal: -4d39

Square: 390813361

Square Root: 140.60227594174995

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

T(n,k)=Number of nXk binary arrays with row sums nondecreasing and columns lexicographically nondecreasing. A267245

Breadth-first reading of the subtree rooted at 7 of the tree where each parent node is the arithmetic derivative (A003415) of all its children. A327977

a(n) = numerator(∑_k=1..n d(k+1)/d(k)), where d is the number of divisors function. A386925

Numbers k such that the continued fraction for sqrt(k) has period 69. A20408

Number of n X 3 binary arrays with row sums nondecreasing and columns lexicographically nondecreasing. A267240

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 21. A31609

Column k=4 sequence of array A103728. A103731