Properties of the Number 40653

Forty Thousand Six Hundred Fifty-Three

Basics

Value: 40652 → 40653 → 40654

Parity: odd

Prime: No

Previous Prime: 40639

Next Prime: 40693

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 4517

Divisors: 1, 3, 9, 4517, 13551, 40653

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001111011001101

Octal: 117315

Duodecimal: 1B639

Hexadecimal: 9ecd

Square: 1652666409

Square Root: 201.62589119455865

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

Odd composites k such that σ(k) has the same powerful part as k, where σ is the sum of divisors function. A386425

Records in A110030. A110031

Number of nX3 nonnegative integer arrays with upper left 0 and lower right n+3-4 and value increasing by 0 or 1 with every step right or down. A252871

The n-th highly composite number equals the a(n)-th composite number, for n >= 3. A74329

Number of (n+1)X(n+1) -11..11 symmetric matrices with every 2X2 subblock having sum zero and one, two or three distinct values. A211714

Numbers n such that n·359# +-1 are twin primes, where 359# = 72nd primorial (A002110(72)). A87907

Consider the base-7 Kaprekar map n->K(n) defined in A165071. Sequence gives numbers belonging to cycles, including fixed points. A165076

Consider the base-7 Kaprekar map n->K(n) defined in A165071. Sequence gives numbers belonging to cycles of length greater than 1. A165078

Smallest member of cycle corresponding to n-th term of A165087. A165088

Expansion of (1 - 3·x) / (1 - 5·x + 3·x²). A52961