1078
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 2052
- Proper Divisor Sum (Aliquot Sum)
- 974
- 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
- 420
- Möbius Function
- 0
- Radical
- 154
- Omega Function (Ω)
- 4
- 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
- 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
- 49
- Smith Number
- no
- Vampire 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
Appears in sequences
- Number of partitions of n, with three kinds of 1 and 2 and two kinds of 3,4,5,....at n=9A000714
- Expansion of 1/((1-x)^4*(1+x)).at n=21A002623
- Positions of remoteness 5 in Beans-Don't-Talk.at n=35A005697
- Numbers k such that k^16 + 1 is prime.at n=51A006313
- Number of lattices on n unlabeled nodes.at n=9A006966
- Coordination sequence T1 for Zeolite Code EMT.at n=27A008086
- Coordination sequence T4 for Zeolite Code FER.at n=20A008109
- Coordination sequence T2 for Zeolite Code NES.at n=21A008206
- Coordination sequence T4 for Zeolite Code PAU.at n=24A008222
- Coordination sequence T6 for Zeolite Code PAU.at n=24A008224
- Multiples of 22.at n=49A008604
- Number of unrooted quartic trees with n (unlabeled) nodes and possessing a centroid; number of n-carbon alkanes C(n)H(2n +2) with a centroid ignoring stereoisomers.at n=13A010372
- a(n) = floor( n*(n-1)*(n-2)/25 ).at n=31A011907
- Molien series of 4-dimensional representation of u.g.g.r. #8.at n=13A013978
- Number of ordered quadruples of integers from [ 1,n ] with no common factors between pairs.at n=21A015636
- Numbers k such that phi(k + 5) | sigma(k).at n=46A015821
- a(n) = n*(n+1)*(4*n+5)/6.at n=11A016061
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MAZ = Mazzite (Na2,K2,Ca,Mg)5[Al10Si26O72].28H2O starting from a T1 atom.at n=10A019142
- Pseudoprimes to base 67.at n=18A020195
- Positive numbers k such that k and 8*k are anagrams in base 9 (written in base 9).at n=0A023085