3070
domain: N
Properties
Digital Properties
- Digit Count
- 4
- 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
- 5544
- Proper Divisor Sum (Aliquot Sum)
- 2474
- 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
- 1224
- Möbius Function
- -1
- Radical
- 3070
- 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
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 61
- Smith Number
- no
- Vampire 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
Appears in sequences
- Number of acyclic disubstituted alkanes with n carbon atoms and identical substituents.at n=8A005961
- Expansion of (1+x)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=56A008762
- Number of directed site animals with no loops enumerated by area (or number of sites).at n=9A010374
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite HEU = Heulandite Ca4[Al8Si28O72].24H2O starting with a T5 atom.at n=11A019134
- Numbers k such that the continued fraction for sqrt(k) has period 42.at n=30A020381
- Numbers k such that Fibonacci(k) == -55 (mod k).at n=48A023170
- a(n) = Sum_{k=1..n} floor((n/k)*floor(n/k)).at n=43A024921
- a(2*n) = 3*2^n - 2; a(2*n+1) = 2^(n+2) - 2.at n=20A027383
- Molien series for complete weight enumerator of self-dual code over GF(5).at n=26A028344
- Numbers whose base-4 representation has 4 fewer 0's than 3's.at n=30A031469
- a(n) = 3*2^n - 2.at n=10A033484
- Reverse and add (in base 4).at n=14A035524
- Number of partitions in parts not of the form 7k, 7k+1 or 7k-1. Also number of partitions with no part of size 1 and differences between parts at distance 2 are greater than 1.at n=47A035937
- Number of partitions in parts not of the form 23k, 23k+3 or 23k-3. Also number of partitions with at most 2 parts of size 1 and differences between parts at distance 10 are greater than 1.at n=30A035991
- Sums of 10 distinct powers of 2.at n=20A038461
- Base-4 palindromes that start with 2.at n=41A043004
- Numbers k such that the string 0,7 occurs in the base 10 representation of k but not of k-1.at n=32A044339
- Numbers n such that string 7,0 occurs in the base 10 representation of n but not of n-1.at n=33A044402
- Numbers n such that string 7,0 occurs in the base 10 representation of n but not of n+1.at n=33A044783
- Numbers whose base-4 representation contains no 0's and exactly four 3's.at n=30A045065