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Properties of the Number 21416

Twenty-One Thousand Four Hundred Sixteen

Basics

Value: 21415 → 21416 → 21417

Parity: even

Prime: No

Previous Prime: 21407

Next Prime: 21419

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 3 × 2677

Divisors: 1, 2, 4, 8, 2677, 5354, 10708, 21416

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001110101000

Octal: 51650

Duodecimal: 10488

Hexadecimal: 53a8

Square: 458645056

Square Root: 146.34206503941374

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

Number of compositions of n into pairwise relatively prime parts. A101268
Number of integer compositions of n with the same length as the absolute value of their alternating sum. A357183
T(n,k) = Number of (n+1)X(k+1) 0..3 arrays with every 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward and upward neighbors. A205642
Numbers k such that 2k + 25 is prime. A157006
Binomial transform of the characteristic function of the prime numbers (A010051). A121497
Numbers n such that the digits of σ(n) are exactly the same (albeit in different order) as the digits of φ(n), in base 10. A175795
Denominators of continued fraction convergents to sqrt(929). A42797
Numbers n which are a proper multiple (>1) of A068505(n) (= n read in base m+1 where m = largest digit of n). A89584
Number of set partitions of {1..n} such that the mean of the means of the blocks is (n+1)/2. A361910
Number of (n+1)X2 0..3 arrays with every 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward and upward neighbors. A205635