Properties of the Number 21714

Twenty-One Thousand Seven Hundred Fourteen

Basics

Value: 21713 → 21714 → 21715

Parity: even

Prime: No

Previous Prime: 21713

Next Prime: 21727

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 7 × 11 × 47

Divisors: 1, 2, 3, 6, 7, 11, 14, 21, 22, 33

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101010011010010

Octal: 52322

Duodecimal: 10696

Hexadecimal: 54d2

Square: 471497796

Square Root: 147.35671006099452

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

G.f. A(x) satisfies: A(x) = 1 + x·A(x)³/(1 - x). A307678

Smallest multiple of n using all the digits of all its divisors (a permutation of the concatenation of its divisors), or 0 if no such number exists. A77351

Bisect A053445 then calculate the first differences of the resulting sequence. A160643

The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n, 0 < r <= n (see Example). A110426

Perimeters of nondegenerate triangles with integer areas, whose side lengths are triangular numbers. A385737

Number of n-digit 6th powers. A216656

Volume of elliptic cone (rounded down) with semi-minor axis = height = n and semi-major axis = 3·n/2. A228391

Number of 3D walks of type abb. A302181

Fibonacci sequence beginning 0, 22. A22356

Let x(1)x(2)...x(q) the decimal expansion of the numbers k having exactly q distinct prime divisors p(1) < p(2) < ... < p(q). Sequence lists the numbers k such that p(1)/x(q) + p(2)/x(q-1)+ ... + p(q)/x(1) is an integer. A235153