928
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 1890
- Proper Divisor Sum (Aliquot Sum)
- 962
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 448
- Möbius Function
- 0
- Radical
- 58
- Omega Function (Ω)
- 6
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 23
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- neunhundertachtundzwanzig· ordinal: neunhundertachtundzwanzigste
- English
- nine hundred twenty-eight· ordinal: nine hundred twenty-eighth
- Spanish
- novecientos veintiocho· ordinal: 928º
- French
- neuf cent vingt-huit· ordinal: neuf cent vingt-huitième
- Italian
- novecentoventotto· ordinal: 928º
- Latin
- nongenti viginti octo· ordinal: 928.
- Portuguese
- novecentos e vinte e oito· ordinal: 928º
Appears in sequences
- Numbers that are the sum of 2 squares but not sum of 3 nonzero squares.at n=34A000549
- Numbers beginning with letter 'n' in English.at n=40A000981
- Number of cells of square lattice of edge 1/n inside quadrant of unit circle centered at 0.at n=34A001182
- Partial sums of A006206.at n=17A001461
- Numbers k such that 45*2^k - 1 is prime.at n=34A002242
- Inverse of reduced totient function.at n=23A002396
- Number of integer points in a certain quadrilateral scaled by a factor of n.at n=45A002789
- Numbers that are the sum of 11 positive 6th powers.at n=15A003367
- G.f.: (1 + x^4 + x^7 + 2*x^8 + x^9 + x^12 + x^16)/Product_{i=1..8} (1 - x^i).at n=20A003405
- Record values in A005210.at n=34A005211
- Bishops on an n X n board (see Robinson paper for details).at n=10A005633
- Cald's sequence: a(n+1) = a(n) - prime(n) if that value is positive and new, otherwise a(n) + prime(n) if new, otherwise 0; start with a(1)=1.at n=102A006509
- a(n) = Sum_{k=1..n-1} k XOR n-k.at n=38A006582
- a(n) = Sum_{k=1..n-1} (k OR n-k).at n=31A006583
- Number of cyclic neofields of order n.at n=7A006609
- Number of elements (a b, c d) in GL(2,Z) with |det| = 1, trace <= n and 0 <= a <= {b, c} <= d.at n=46A007295
- Exponential-convolution of natural numbers with themselves.at n=6A007466
- Coordination sequence T3 for Zeolite Code AEI.at n=23A008003
- Coordination sequence T3 for Zeolite Code AEL.at n=20A008006
- Coordination sequence T1 for Zeolite Code AFI.at n=21A008014