Properties of the Number 20888

Twenty Thousand Eight Hundred Eighty-Eight

Basics

Value: 20887 → 20888 → 20889

Parity: even

Prime: No

Previous Prime: 20887

Next Prime: 20897

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 7 × 373

Divisors: 1, 2, 4, 7, 8, 14, 28, 56, 373, 746

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000110011000

Octal: 50630

Duodecimal: 10108

Hexadecimal: 5198

Square: 436308544

Square Root: 144.52681412111733

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 that are the sum of 6 positive 7th powers. A3373

T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero and avoiding the patterns z z+1 z+2 and z z-1 z-2. A209485

T(n,k)=Number of (n+3)X(k+3) binary arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock. A188105

Smallest positive number using exactly n segments on a calculator display (when '6' and '7' are represented using 6 resp. 3 segments). A216261

Where record values occur in A010371. A143617

Smallest positive number that needs more lines when shown on a 7-segment display (digital clock) than any previous term. A38619

Conjectured dimension of a module associated with the free commutative Moufang loop with n generators. A373

a(n) is the determinant of the 2 X 2 matrix whose entries (when read by rows) are the n-th primes congruent to 1, 3, 5, 7 mod 8 respectively. A337145

a(1) = 2, a(n) = (n-th-even n³) - (sum of previous terms). A181509

Number of (n+3) X 4 binary arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock. A188097