Properties of the Number 90640

Ninety Thousand Six Hundred Forty

Basics

Value: 90639 → 90640 → 90641

Parity: even

Prime: No

Previous Prime: 90631

Next Prime: 90641

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 5 × 11 × 103

Divisors: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001000010000

Octal: 261020

Duodecimal: 44554

Hexadecimal: 16210

Square: 8215609600

Square Root: 301.06477708293943

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

G.f. satisfies: A(x) = 1 + x·A(x)² + 2·x²*(A(x)² - A(x)); equals the base sequence of pendular trinomial triangle A122445. A122446

Convolution of A007528 and A002476. A354543

Number of length 6+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third. A248439

a(0) = 0; a(2n) = 4·a(n), a(2n+1) = a(n) + 1. A90640