Properties of the Number 90027

Ninety Thousand Twenty-Seven

Basics

Value: 90026 → 90027 → 90028

Parity: odd

Prime: No

Previous Prime: 90023

Next Prime: 90031

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 1429

Divisors: 1, 3, 7, 9, 21, 63, 1429, 4287, 10003, 12861

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: 10101111110101011

Octal: 257653

Duodecimal: 44123

Hexadecimal: 15fab

Square: 8104860729

Square Root: 300.04499662550614

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

Floor of the expected value of number of trials until exactly four cells are empty in a random distribution of n balls in n cells. A210115

a(n) is the Severi degree for curves of degree n and cogenus 5. A328552

Duplicate of A328552. A171115

Coefficients of the Faber partition polynomials. A263916

Number of Hadamard matrices of order 4n. A7299

Number of linear geometries on n (unlabeled) points. A1200

Number of distinct lines through the origin in 5-dimensional cube of side length n. A90027

a(0) = 0 and a(n) = (4·n³ - 12·n² + 20·n - 9)/3 for n >= 1. A174794

Numbers m such that a Hadamard matrix of order m exists. A19442

a(n) = (4·n³ + 12·n² - 4·n + 3)/3. A322594