Properties of the Number -190

One Hundred Ninety

Basics

Value: -191 → -190 → -189

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 19

Divisors: 1, 2, 5, 10, 19, 38, 95, 190

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10111110

Octal: -276

Duodecimal: -13A

Hexadecimal: -be

Square: 36100

Square Root: 13.784048752090222

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

a(n) = ∑_d∣n (-1)^d-1*d². A321543

Expansion of e.g.f. cos(log(1+x)). A3703

Expansion of ∏_{k >= 1} (1 - x^k)⁶. A729

Triangle T(n,k), n>=1, 0<=k<=3ⁿ, read by rows: row n gives the coefficients of the chromatic polynomial of the Hanoi graph H_n, highest powers first. A193233

Alternating sum of squares to n. A89594

Expansion of cube of continued fraction 1/ ( 1+q/ ( 1+q²/ ( 1+q³/ ( 1+q⁴/... )))). A55102

G.f.: Im((i; x)_inf), where (a; q)_inf is the q-Pochhammer symbol, i = sqrt(-1). A278400

Smallest term in wrecker ball sequence starting with n. A248952

Triangle read by rows: coefficients of the chromatic polynomial of the n-Hanoi graph. A288839

Expansion of 1/(1+2·x*c(x)), c(x) the g.f. of Catalan numbers A000108. A126984