Properties of the Number 14721

Fourteen Thousand Seven Hundred Twenty-One

Basics

Value: 14720 → 14721 → 14722

Parity: odd

Prime: No

Previous Prime: 14717

Next Prime: 14723

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 701

Divisors: 1, 3, 7, 21, 701, 2103, 4907, 14721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11100110000001

Octal: 34601

Duodecimal: 8629

Hexadecimal: 3981

Square: 216707841

Square Root: 121.33012816279393

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) is the reverse concatenation of divisors of n. A176558

a(n) = (4·n³ - 9·n² + 11·n + 3)/3. A161707

Pascal-(1,7,1) array. A81582

a(n) = 11ⁿ + 3ⁿ - 1. A155623

Array read by antidiagonals: T(n,k) is the number of isomorphism classes of n-fold coverings of a connected graph with Betti number k (1 <= n, 0 <= k). A160449

Integers k such that all the digits needed to write the consecutive nonnegative integers from 0 to k fill exactly a square (no holes, no overlaps). A158022

Numbers n such that n divides the concatenation of all divisors in descending order. A224930

Triangle read by rows, T(n,k) = ∑_j=0..n-k+1 C(n-1,j-1)*T(n-j,k-1) if k ≠ 0 else 1, n>=0, 0<=k<=n. A256894

Numbers n such that the decimal number concat(3,n) is a square. A273358

Number of integer partitions of n whose length is not a semi-sum of the parts. A367398