Properties of the Number 29990

Twenty-Nine Thousand Nine Hundred Ninety

Basics

Value: 29989 → 29990 → 29991

Parity: even

Prime: No

Previous Prime: 29989

Next Prime: 30011

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 2999

Divisors: 1, 2, 5, 10, 2999, 5998, 14995, 29990

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111010100100110

Octal: 72446

Duodecimal: 15432

Hexadecimal: 7526

Square: 899400100

Square Root: 173.1762108374011

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 inversion sequences avoiding pattern 201 (or 210). A263777

Expansion of (-1 + ∏_k>=1 1 / (1 + (-x)^k))⁵. A341244

Smallest even number k such that lpf(k-3) = prime(n) while lpf(k-1) > lpf(k-3), where lpf=least prime factor (A020639). A242490

G.f. A(x) satisfies: A(x) = 1 + x + x² + x³*A(x)². A307970

a(n) = floor(n! / n³). A242426

n times the coefficient of xⁿ in log[1 + sum(k>=0, x²^k)]. A92462

Numbers k such that k² is palindromic in base 6. A29990

Number of (n+3) X 6 0..2 arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock. A186583

Number of nX4 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,1 for x=0,1,2,3,4. A197675