Properties of the Number -6438

Four Hundred Thirty-Eight

Basics

Value: -6439 → -6438 → -6437

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 29 × 37

Divisors: 1, 2, 3, 6, 29, 37, 58, 74, 87, 111

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -1100100100110

Octal: -14446

Duodecimal: -3886

Hexadecimal: -1926

Square: 41447844

Square Root: 80.23714850367004

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

Sequence is {a(4,n)}, where a(m,n) is defined at sequence A110665. A110669

a(n) = -(n - 4)*(n - 5)*(n - 12)/6. A167541

Expansion of e.g.f. exp(exp(1 - exp(x)) - 1). A308519

Pairs (j, k) of numbers j<k such that φ(j) = φ(k), σ(j) = σ(k), d(j) = d(k). A134922

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

Index of smallest prime number where n consecutive leading digits of the index match n consecutive leading digits in the prime. A133583

The number of different classes of 2-dimensional convex lattice polytopes having volume n/2 up to unimodular equivalence. A187015

Sum of the first n palindromes (A002113). A46489

a(n) = n*(n+7)*(n+8)/6. A111396

T(n,k)=Number of nXk binary arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors. A183368