Properties of the Number 78881

Seventy-Eight Thousand Eight Hundred Eighty-One

Basics

Value: 78880 → 78881 → 78882

Parity: odd

Prime: No

Previous Prime: 78877

Next Prime: 78887

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 11 × 71 × 101

Divisors: 1, 11, 71, 101, 781, 1111, 7171, 78881

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011010000100001

Octal: 232041

Duodecimal: 39795

Hexadecimal: 13421

Square: 6222212161

Square Root: 280.8576151718162

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

a(n) = n⁴ - n³ + n² - n + 1. A60884

Sums of 5 distinct powers of 5. A38477

Strong pseudoprimes to base 17. A20243

Numbers k such that k² contains only digits {1,2,6}. A53882

Numbers k such that k and k² use only the digits 1, 2, 6, 7 and 8. A137014

Sphenic numbers k = p·q*r such that reversal(k) is also a sphenic number and reversal(k) = reversal(p)*reversal(q)*reversal(r). A242726

Triangle of (Gaussian) q-binomial coefficients for q=-17. A15141

Size of the largest subset S of {1,2,3,...,n} with the property that if i and j are distinct elements of S then i XOR j is not in S, where XOR is the bitwise exclusive-OR operator. A78881