Properties of the Number -13888

Thirteen Thousand Eight Hundred Eighty-Eight

Basics

Value: -13889 → -13888 → -13887

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁶ × 7 × 31

Divisors: 1, 2, 4, 7, 8, 14, 16, 28, 31, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -11011001000000

Octal: -33100

Duodecimal: -8054

Hexadecimal: -3640

Square: 192876544

Square Root: 117.84735890124988

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

Irregular triangle read by rows: T(n,k) is the k-th generalized Eulerian number of order n and degree 2, for n >= 1 (the rows start at k=1). A211232

Numbers k such that σ(x) = k has exactly 10 solutions. A60666

T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero. A200165

Irregular triangular array, read by rows: row n shows the coefficients of the polynomial p(n,x) defined in Comments. A329429

Sum of the cubes of the parts in the partitions of n into two distinct parts. A294287

Total number of parts coprime to n in the partitions of n into 6 parts. A363324

Coefficients of unique normalized cusp form Delta₁₆ of weight 16 for full modular group. A27364

Numbers which are the sum of two positive cubes and divisible by 31. A102658

Coefficients of polynomials (in descending powers of x) P(n,x) := 1 + P(n-1,x)², where P(1,x) = x + 1. A158985

a(n) = n*(2·n² - 3·n + 4)/3. A37235