Properties of the Number 3808

Three Thousand Eight Hundred Eight

Basics

Value: 3807 → 3808 → 3809

Parity: even

Prime: No

Previous Prime: 3803

Next Prime: 3821

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁵ × 7 × 17

Divisors: 1, 2, 4, 7, 8, 14, 16, 17, 28, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 111011100000

Octal: 7340

Duodecimal: 2254

Hexadecimal: ee0

Square: 14500864

Square Root: 61.70899448216605

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

Triangle formed from odd-numbered columns of triangle of expansions of powers of·in terms of Chebyshev polynomials U_n(x). Sometimes called Catalan's triangle. A39598

12-gonal (or dodecagonal) numbers: a(n) = n*(5·n-4). A51624

Generalized 27-gonal (or icosiheptagonal) numbers: m*(25·m - 23)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A316725

a(n) = 8·binomial(2·n+1,n-3)/(n+5). A3518

Numbers n such that the decimal expansions of both n and n² have 0 as smallest digit and 8 as largest digit. A256708

a(n) = ∑_i=0..n ∑_j=0..i T(i,j), T given by A026584. A26598

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297314

a(n) is the greatest k such that A307730(k) = n. A348409

Products of the 5th power of a prime and 2 distinct primes (p⁵*q·r). A179667

a(n) = A031287(n) + A031288(n) + A031289(n) + A031290(n) + A031291(n) + A031292(n) + A031293(n) + A031294(n) + A031295(n) + A031296(n). A193428