Properties of the Number 90205

Ninety Thousand Two Hundred Five

Basics

Value: 90204 → 90205 → 90206

Parity: odd

Prime: No

Previous Prime: 90203

Next Prime: 90217

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 18041

Divisors: 1, 5, 18041, 90205

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10110000001011101

Octal: 260135

Duodecimal: 44251

Hexadecimal: 1605d

Square: 8136942025

Square Root: 300.341472327749

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 primitive (period n) periodic palindromic structures using exactly four different symbols. A56521

Triangle read by rows: T(n,k) (0 <= k <= floor(n/2)) is the number of Delannoy paths of length n, having k EE's crossing the line y = x (i.e., two consecutive E steps from the line y = x+1 to the line y = x-1). A110121

Least k > 1 such that n*(k·n-1) - 1 divides n^k·n-1 - 1, or 0 if no such k exists. A273772

a(n) = nⁿ * (n+1)ⁿ⁺¹. A90205