Properties of the Number 3840

Three Thousand Eight Hundred Forty

Basics

Value: 3839 → 3840 → 3841

Parity: even

Prime: No

Previous Prime: 3833

Next Prime: 3847

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ⁸ × 3 × 5

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100000000

Octal: 7400

Duodecimal: 2280

Hexadecimal: f00

Square: 14745600

Square Root: 61.96773353931867

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Double factorials n!!: a(n) = n·a(n-2) for n > 1, a(0) = a(1) = 1. A6882

Double factorial of even numbers: (2n)!! = 2ⁿ*n!. A165

a(n) = n³ - n². A45991

Jordan-Polya numbers: products of factorial numbers A000142. A1013

Double-bitters: only even length runs in binary expansion. A1196

Numbers that are divisible by exactly 10 primes with multiplicity. A46314

Hexanacci numbers: a(n+1) = a(n)+...+a(n-5) with a(0)=...=a(4)=0, a(5)=1. A1592

Numbers with distinct prime factors 2, 3, and 5. A143207

3-fold convolution of A000302 (powers of 4). A38845

First positive integer with each ω-sequence. A325238