Properties of the Number 90485

Ninety Thousand Four Hundred Eighty-Five

Basics

Value: 90484 → 90485 → 90486

Parity: odd

Prime: No

Previous Prime: 90481

Next Prime: 90499

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 × 18097

Divisors: 1, 5, 18097, 90485

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10110000101110101

Octal: 260565

Duodecimal: 44445

Hexadecimal: 16175

Square: 8187535225

Square Root: 300.8072472531205

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

First column in inverse of Euler φ sequence matrix. A106479

Number of composites removed in each step in the Sieve of Eratosthenes for 10⁸. A227797

O.g.f. A(x) satisfies: [xⁿ] (1+x)^n² / exp( n·A(x) ) = 0 for n >= 1. A319833

a(n) = Floor[(Exp[n/PrimePi[n]]-1)/Log[n]]. A90485