Properties of the Number 80404

Eighty Thousand Four Hundred Four

Basics

Value: 80403 → 80404 → 80405

Parity: even

Prime: No

Previous Prime: 80387

Next Prime: 80407

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 20101

Divisors: 1, 2, 4, 20101, 40202, 80404

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011101000010100

Octal: 235024

Duodecimal: 3A644

Hexadecimal: 13a14

Square: 6464803216

Square Root: 283.55599094358774

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 days after Jan 01 1000 such that the date written in the ISO-8601-format YYYYMMDD is palindromic. A210883

Coefficients in the expansion ∏_n>=1 (1-q^2n-1)²/(1-q²ⁿ)². A274621

T(n,k)=Number of nXk 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. A267667

Number of bipartitions of n wherein odd parts are distinct (and even parts are unrestricted). A273225

Positive numbers of the form x⁵-10x³*y²+5x·y⁴ (where x,y are integers and y>x). A135792

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n)², where a(0) = 2, a(1) = 3, b(0) = 1, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences. A296248

Number of nX5 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. A267664

Number of 5Xn 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. A267670

Number of n X n 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. A267660

a(n)=A007947[A055932(n)]; the sequence consists of primorial numbers;. A80404