Properties of the Number 18888

Eighteen Thousand Eight Hundred Eighty-Eight

Basics

Value: 18887 → 18888 → 18889

Parity: even

Prime: No

Previous Prime: 18869

Next Prime: 18899

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 787

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 787, 1574

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100111001000

Octal: 44710

Duodecimal: AB20

Hexadecimal: 49c8

Square: 356756544

Square Root: 137.43362034087585

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 ways of writing n as the sum of 11 triangular numbers. A226255

T(n,k) = Number of n-step self-avoiding walks on a k X k X k cube summed over all starting positions. A187162

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

Number of ways of writing n as the sum of n triangular numbers. A106337

Write 0, 1, ..., n in binary and add as if they were decimal numbers. A67894

The number of n-almost primes less than or equal to eⁿ, starting with a(0)=1. A116432

Number of partitions of 5n such that cn(0,5) <= cn(1,5) = cn(4,5) = cn(2,5) = cn(3,5). A202087

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

Triangle, read by rows, where g.f. of row n equals the product of (1-x)ⁿ and the g.f. of the coordination sequence for root lattice B_n, for n >= 0. A109001