Properties of the Number 80872

Eighty Thousand Eight Hundred Seventy-Two

Basics

Value: 80871 → 80872 → 80873

Parity: even

Prime: No

Previous Prime: 80863

Next Prime: 80897

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 11 × 919

Divisors: 1, 2, 4, 8, 11, 22, 44, 88, 919, 1838

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101111101000

Octal: 235750

Duodecimal: 3A974

Hexadecimal: 13be8

Square: 6540280384

Square Root: 284.3800274280878

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

Expansion of η(q²)⁴ / η(q)⁸ in powers of q. A284286

Expansion of 1 / (∑_n=-oo..oo x^n²)⁴. A4405

Number of connected undirected unlabeled loopless multigraphs with 4 vertices and n edges. A290778

a(n) is the least positive number k such that the product of the first n primes that are congruent to 1 (mod 4) is equal to y² - k² for some integer y. A350813

a(n)*a(n+3) - a(n+1)*a(n+2) = 4, given a(0)=a(1)=1, a(2)=5. A80872