1073
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1140
- Proper Divisor Sum (Aliquot Sum)
- 67
- 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
- 1008
- Möbius Function
- 1
- Radical
- 1073
- Omega Function (Ω)
- 2
- 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
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers k such that phi(2k-1) < phi(2k), where phi is Euler's totient function A000010.at n=14A001836
- Numbers that are the sum of 12 positive 5th powers.at n=51A003357
- Numbers that are a sum of distinct positive cubes in more than one way.at n=45A003998
- Number of Twopins positions.at n=15A005685
- Weighted count of partitions with odd parts.at n=28A005896
- Coordination sequence T1 for Zeolite Code AFY.at n=27A008029
- Coordination sequence T1 for Zeolite Code KFI.at n=25A008123
- Coordination sequence T4 for Zeolite Code MEL.at n=21A008153
- Composite but smallest prime factor >= 17.at n=30A008367
- Expansion of (1+x^5)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=40A008766
- Expansion of e.g.f.: exp(sinh(sin(x))).at n=9A009219
- If a, b in sequence, so is ab+5.at n=20A009304
- If a, b in sequence, so is ab+7.at n=14A009312
- Expansion of sin(sin(sinh(x))).at n=4A009471
- Coordination sequence T1 for Zeolite Code VSV.at n=21A009914
- Numbers k such that the continued fraction for sqrt(k) has period 7.at n=11A010338
- a(n) = prevprime(n)*nextprime(n).at n=28A013638
- Integers that are squarefree and also the sum of first k squarefrees for some k.at n=20A013932
- a(n) = n^2 - floor( n/2 ).at n=33A014848
- Pseudoprimes to base 75.at n=10A020203