Properties of the Number 19983

Nineteen Thousand Nine Hundred Eighty-Three

Basics

Value: 19982 → 19983 → 19984

Parity: odd

Prime: No

Previous Prime: 19979

Next Prime: 19991

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 6661

Divisors: 1, 3, 6661, 19983

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111000001111

Octal: 47017

Duodecimal: B693

Hexadecimal: 4e0f

Square: 399320289

Square Root: 141.36123938336138

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 quasi-orders with n elements. A6870

Irregular triangle read by rows: the number of hydrocarbon structures that can be drawn with a given number of carbons and units of unsaturation. A134819

5-digit terms in the continued fraction for π. A48960

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 94. A31592

Recip transform of 2*(1 + x⁵ + x⁶)-1/(1-x). A49166

Number of ordered triples (a,b,c) of positive integers less than n with the property that n divides a·b*c. A352078

Number of spanning trees in P₄ X P_n. A3696

Numbers k such that 6·R_k - 5 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A98088

Decimal expansion of tangent of 85 degrees. A19983