Properties of the Number 40808

Forty Thousand Eight Hundred Eight

Basics

Value: 40807 → 40808 → 40809

Parity: even

Prime: No

Previous Prime: 40801

Next Prime: 40813

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 5101

Divisors: 1, 2, 4, 8, 5101, 10202, 20404, 40808

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001111101101000

Octal: 117550

Duodecimal: 1B748

Hexadecimal: 9f68

Square: 1665292864

Square Root: 202.00990074746338

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) = ∑_i=n..n+1 ∑_j=i+1..n+2 ∑_k=j+1..n+3 prime(i)*prime(j)*prime(k). A127349

a(n) = numerator of the sum of the reciprocals of the n primes from prime(n(n-1)/2+1) to prime(n(n+1)/2). A81980

Continued fraction for sqrt(837). A40808