Properties of the Number 49890

Forty-Nine Thousand Eight Hundred Ninety

Basics

Value: 49889 → 49890 → 49891

Parity: even

Prime: No

Previous Prime: 49877

Next Prime: 49891

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 1663

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 1663, 3326

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100001011100010

Octal: 141342

Duodecimal: 24A56

Hexadecimal: c2e2

Square: 2489012100

Square Root: 223.3606948413261

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 n X 2 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4. A239594

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = n - 1 - 2^p and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = a(2) = 1 and a(3) = 2. A49890

Number of nX4 0..1 arrays with every element unequal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A320360