Properties of the Number 19874

Nineteen Thousand Eight Hundred Seventy-Four

Basics

Value: 19873 → 19874 → 19875

Parity: even

Prime: No

Previous Prime: 19867

Next Prime: 19889

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 19 × 523

Divisors: 1, 2, 19, 38, 523, 1046, 9937, 19874

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110110100010

Octal: 46642

Duodecimal: B602

Hexadecimal: 4da2

Square: 394975876

Square Root: 140.9751751195933

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

Array read by antidiagonals: T(n,m) is the number of matchings in the torus grid graph C_n X C_m. A270246

Numbers whose second arithmetic derivative (A068346) is a primorial number (A002110) > 1. A368702

Number of partitions p of n such that max(p) - min(p) is a part of p. A238493

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 601", based on the 5-celled von Neumann neighborhood. A272824

a(1)=1. a(n+1) = sum a(k), where the sum is over all positive integers k, k <= n, where each positive integer <= k and coprime to k is also coprime to n. A124693

Lexicographically earliest sequence of distinct positive terms such that the product of two consecutive terms has at least 5 distinct prime factors. A285487

Decimal expansion of sine of 65 degrees. A19874

a(n) = n² - 917·n + 9479. A161726