190
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 360
- Proper Divisor Sum (Aliquot Sum)
- 170
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 72
- Möbius Function
- -1
- Radical
- 190
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- yes
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- yes
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- yes
- Harshad Number
- yes
- Narcissistic Number
- no
- Collatz Steps
- 106
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Names
- German
- einshundertneunzig· ordinal: einshundertneunzigste
- English
- one hundred ninety· ordinal: one hundred ninetieth
- Spanish
- ciento noventa· ordinal: 190º
- French
- cent quatre-vingt-dix· ordinal: cent quatre-vingt-dixième
- Italian
- centonovanta· ordinal: 190º
- Latin
- centum nonaginta· ordinal: 190.
- Portuguese
- cento e noventa· ordinal: 190º
Appears in sequences
- Number of n-bead necklaces (turning over is allowed) where complements are equivalent.at n=13A000011
- Local stops on New York City A line subway.at n=22A000054
- Hexagonal numbers: a(n) = n*(2*n-1).at n=10A000384
- One half of number of non-self-conjugate partitions; also half of number of asymmetric Ferrers graphs with n nodes.at n=18A000701
- Euler's "numerus idoneus" (or "numeri idonei", or idoneal, or suitable, or convenient numbers).at n=45A000926
- Dimension of the n-th graded piece of the mod-2 Steenrod algebra A_2.at n=55A000929
- Numbers that are divisible by at least three different primes.at n=28A000977
- Dimensions (sorted, with duplicates removed) of real simple Lie algebras.at n=45A001066
- Moran numbers: k such that k/(sum of digits of k) is prime.at n=15A001101
- a(n) = floor(n*log((14/11)*n^(10/9))).at n=42A001195
- Triangle read by rows, in which row n consists of n(n+m) for m = 1 .. n-1.at n=44A001283
- Numbers of form m*k with m+1 <= k <= 2m-1.at n=52A001284
- Fibonacci entry points: a(n) = smallest m > 0 such that the n-th prime divides Fibonacci(m).at n=42A001602
- Convolved Fibonacci numbers.at n=4A001873
- v-pile numbers of the 3-Wythoff game with i=1.at n=44A001958
- Nearest integer to n^2/8.at n=39A001971
- Expansion of 1/((1-x)^2*(1-x^4)) = 1/( (1+x)*(1+x^2)*(1-x)^3 ).at n=36A001972
- Number of partitions of floor(5n/2) into n nonnegative integers each no more than 5.at n=11A001975
- Number of two-rowed partitions of length 3.at n=13A001993
- Numbers k for which the rank of the elliptic curve y^2 = x^3 + k*x is 0.at n=84A002158