Properties of the Number 90210

Ninety Thousand Two Hundred Ten

Basics

Value: 90209 → 90210 → 90211

Parity: even

Prime: No

Previous Prime: 90203

Next Prime: 90217

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 31 × 97

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 31, 62

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110000001100010

Octal: 260142

Duodecimal: 44256

Hexadecimal: 16062

Square: 8137844100

Square Root: 300.349796071181

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) = 3·n³ + n² - 4·n. A83127

Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 2,2 3,1 4,1 5,1 6,1 polyhexes in any orientation on a planar nXnXn triangular grid. A155364

Triangle of certain generalized Bell numbers. A90210

Coordination sequence for 1-skeleton of icosidodecahedron. A330555

Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from the 3 vertices and the equally spaced 3·n points placed on the sides of an equilateral triangle when every pair of the 3 + 3·n points are connected by a circle and where the points lie at the ends of the circle's diameter. A372734

a(1) = 0, a(n) = ∑_{digits d in a(n-1)} (d+[d==0])*c(d,n-1) where c(d,k) = number of digits d in a(1..a(k)), with Iverson bracket. A378360