Properties of the Number 20564

Twenty Thousand Five Hundred Sixty-Four

Basics

Value: 20563 → 20564 → 20565

Parity: even

Prime: No

Previous Prime: 20563

Next Prime: 20593

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 53 × 97

Divisors: 1, 2, 4, 53, 97, 106, 194, 212, 388, 5141

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000001010100

Octal: 50124

Duodecimal: BA98

Hexadecimal: 5054

Square: 422878096

Square Root: 143.4015341619468

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 integer compositions of n that are weakly alternating and have at least two adjacent equal parts. A349800

Rhonda numbers in sexagesimal number system. A255731

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 10 (10 maximizes T(1,1)). A233967

Sums of 5 distinct powers of 4. A38473

Numbers k such that k*(k+2) is a palindrome. A28503

XOR difference triangle, read by rows, of A099898 (in leftmost column) such that the main diagonal equals A099898 shift left and divided by 4. A99897

Shifts left and divides by 4 under the XOR BINOMIAL transform (A099899). A99898

Number of compositions of n into distinct parts with exactly three descents. A241722

A106486-encodings of combinatorial games with value 2. A125995

Number of Goldbach partitions of (2n)ⁿ. A180041