Properties of the Number 19770

Nineteen Thousand Seven Hundred Seventy

Basics

Value: 19769 → 19770 → 19771

Parity: even

Prime: No

Previous Prime: 19763

Next Prime: 19777

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 659

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 659, 1318

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100110100111010

Octal: 46472

Duodecimal: B536

Hexadecimal: 4d3a

Square: 390852900

Square Root: 140.60583202698243

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

Number of polyominoes with n cells that tile the plane by 180-degree rotation (Conway criterion). A75202

Number of distinct languages accepted by unary DFA's with n states. A59413

Number of partitions of n such that the (sum of distinct even parts) >= n/2. A284619

Number of partitions of n such that the (sum of distinct even parts) > n/2. A284618

Floor( ( n + 1/n )⁶ ). A197605

Number of compositions of n where the median of parts equals 1. A391398

Number of permutations of length n which avoid the patterns 2341, 4312. A116704

Number of length-2n binary strings of the form xxyy, with·and y both nonempty. A347583

Run lengths of digits when concatenating Roman numerals less than 4000, cf. A093796. A222581

Decimal expansion of 2·e/17. A19770