3470
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6264
- Proper Divisor Sum (Aliquot Sum)
- 2794
- 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
- 1384
- Möbius Function
- -1
- Radical
- 3470
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 105
- 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 partitions of 3n-1 into n nonnegative integers each no more than 6.at n=18A001978
- Greatest k such that binomial(k,n) has fewer than n distinct prime factors.at n=23A005735
- Greatest k such that binomial(k,n) has fewer than n distinct prime factors.at n=22A005735
- Number of points on surface of hexagonal prism: 12*n^2 + 2 for n > 0 (coordination sequence for W(2)).at n=17A005914
- Number of points on surface of square pyramid: 3*n^2 + 2 (n>0).at n=34A005918
- Coordination sequence T1 for Zeolite Code MTT.at n=36A008189
- Coordination sequence T7 for Zeolite Code VNI.at n=36A009913
- a(n)-th prime is sum of first k primes for some k.at n=12A020641
- a(n) = s(1)*s(n) + s(2)*s(n-1) + ... + s(k)*s(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3).at n=29A024312
- a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = floor( n/2 ), s = natural numbers >= 3.at n=28A024875
- Graham-Sloane-type lower bound on the size of a ternary (n,3,4) constant-weight code.at n=20A030504
- Number of partitions of n into parts not of form 4k+2, 24k, 24k+9 or 24k-9. Also number of partitions in which no odd part is repeated, with at most 4 parts of size less than or equal to 2 and where differences between parts at distance 5 are greater than 1 when the smallest part is odd and greater than 2 when the smallest part is even.at n=40A036033
- Numbers having three 6's in base 8.at n=13A043447
- Numbers n such that string 4,7 occurs in the base 10 representation of n but not of n-1.at n=38A044379
- Numbers n such that string 7,0 occurs in the base 10 representation of n but not of n-1.at n=37A044402
- Numbers n such that string 7,0 occurs in the base 10 representation of n but not of n+1.at n=37A044783
- Starting positions of strings of 2 8's in the decimal expansion of Pi.at n=28A050263
- Numbers m such that the Bernoulli number B_m has denominator 66.at n=40A051230
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 18.at n=36A051983
- Number of integers k not exceeding 2^n such that the cube of number of divisors [A000005(k)] is larger than k.at n=14A056764