Properties of the Number 38642

Thirty-Eight Thousand Six Hundred Forty-Two

Basics

Value: 38641 → 38642 → 38643

Parity: even

Prime: No

Previous Prime: 38639

Next Prime: 38651

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 139 ²

Divisors: 1, 2, 139, 278, 19321, 38642

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001011011110010

Octal: 113362

Duodecimal: 1A442

Hexadecimal: 96f2

Square: 1493204164

Square Root: 196.5756851698602

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) = 2·prime(n)². A79704

2·p², for p an odd prime. A143928

T(n,k)=1/12 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing three of each value. A184386

T(n,k)=Half the number of nXk binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors. A183402

Numbers that are not squarefree and whose Euler totient function is squarefree. A49198

Triangle enumerating certain two-line arrays of positive integers. A211788

McKay-Thompson series of class 21C for the Monster group. A58565

Half the number of nX4 binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors. A183400

1/12 the number of (n+2)X6 0..2 arrays with each 3X3 subblock containing three of each value. A184381

Number of nondecreasing -n..n vectors of length 3 whose dot product with some lexicographically greater than or equal to nondecreasing -n..n vector equals 3. A226424