Properties of the Number 386

Three Hundred Eighty-Six

Basics

Value: 385 → 386 → 387

Parity: even

Prime: No

Previous Prime: 383

Next Prime: 389

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 193

Divisors: 1, 2, 193, 386

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110000010

Octal: 602

Duodecimal: 282

Hexadecimal: 182

Square: 148996

Square Root: 19.6468827043885

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) = 6·n² + 2 for n > 0, a(0)=1. A5897

The primes doubled; even semiprimes. A100484

Numbers k such that k² + 1 is prime. A5574

a(n) = 2^2·n+1 - binomial(2·n+1, n+1). A346

Centered heptagonal numbers. A69099

Twice partitioned numbers where the first partition is strict. A271619

Numbers k with A033676(k)=2, where A033676 is the largest divisor <= sqrt(k). A161344

a(n) = 2^n-1 - ((1+(-1)ⁿ)/4)*binomial(n, n/2). A58622

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 4.8.8 2D tiling (cf. A008576). A299259

Maximal number of regions obtained by joining n points around a circle by straight lines. Also number of regions in 4-space formed by n-1 hyperplanes. A127