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Properties of the Number 1386

One Thousand Three Hundred Eighty-Six

Basics

Value: 1385 → 1386 → 1387

Parity: even

Prime: No

Previous Prime: 1381

Next Prime: 1399

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 2 × 7 × 11

Divisors: 1, 2, 3, 6, 7, 9, 11, 14, 18, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101101010

Octal: 2552

Duodecimal: 976

Hexadecimal: 56a

Square: 1920996

Square Root: 37.22902093797257

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

Numbers having k prime factors (counted with multiplicity), the largest of which is the k-th prime. A106529
Numbers n such that n = product (pk)ck and set of its (ck k's)'s is a self-conjugate partition, where pk is k-th prime and ck > 0. A88902
Octagonal pyramidal numbers: a(n) = n*(n+1)*(2·n-1)/2. A2414
6 times triangular numbers: a(n) = 3·n*(n+1). A28896
a(n) = binomial(n+5,5)*(n+3)/3. A40977
Numbers whose negated unsorted prime signature is not unimodal. A332642
Numbers k such that both k and k + 1 are Niven numbers. A330927
Areas of Pythagorean triangles: numbers which can be the area of a right triangle with integer sides. A9112
(10,1) Pascal triangle. A93645
Coefficient triangle of certain polynomials N(5; m,x). A62190