Properties of the Number 19888

Nineteen Thousand Eight Hundred Eighty-Eight

Basics

Value: 19887 → 19888 → 19889

Parity: even

Prime: No

Previous Prime: 19867

Next Prime: 19889

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 11 × 113

Divisors: 1, 2, 4, 8, 11, 16, 22, 44, 88, 113

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110110110000

Octal: 46660

Duodecimal: B614

Hexadecimal: 4db0

Square: 395532544

Square Root: 141.02482051043356

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

Numbers k such that numerator(Bernoulli(2·k)/(2·k)) is different from numerator(Bernoulli(2·k)/(2·k*(2·k-1))). A90495

Number of 2 X 2 non-singular integer matrices with entries from {0,...,n}. A62801

Number of (w,x,y,z) with all terms in {1,...,n} and median=mean. A212133

Smallest multiple of 8 with digit sum n. A69536

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the minimum of every 2X2 subblock equal. A236911

Number of partitions of n such that (least part) < (multiplicity of greatest part). A240178

Numbers n of the form k + reverse(k) for exactly two k. A72040

Least number k such that A070635(k) = n. A138791

Number of terms in 6th derivative of a function composed with itself n times. A22816

Number of (w,x,y,z) with all terms in {1,...,n} and w+|x-y|<=|x-z|+|y-z|. A212691