Properties of the Number 80380

Eighty Thousand Three Hundred Eighty

Basics

Value: 80379 → 80380 → 80381

Parity: even

Prime: No

Previous Prime: 80369

Next Prime: 80387

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 4019

Divisors: 1, 2, 4, 5, 10, 20, 4019, 8038, 16076, 20095

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100111111100

Octal: 234774

Duodecimal: 3A624

Hexadecimal: 139fc

Square: 6460944400

Square Root: 283.5136681008519

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

Riordan array (1/(1-x·C(x)³), x·C(x)), C(x) the g.f. of A000108. A236830

a(n) = T(2n-1,n-1) = T(2n,n+1), T given by A026725. A26674

Expansion of 1/(1-x·c(x)³), c(x) the g.f. of A000108. A165201

Expansion of 1/(1-x-x³*c(x³)), c(x) the g.f. of A000108. A165407

a(n) = T(n, floor(n/2)), T given by A026670. A26676

Greatest number in row n of array T given by A026725. A26731

Least n such that n consecutive values in A080378 equal 0; i.e., exactly n differences between consecutive primes are divisible by 4. A80380