3478
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5472
- Proper Divisor Sum (Aliquot Sum)
- 1994
- 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
- 1656
- Möbius Function
- -1
- Radical
- 3478
- 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
- 56
- 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
- Numbers k such that 4!*(2k-5)!/(k!*(k-1)!) is an integer.at n=29A004784
- 5!(2n-6)!/n!(n-1)! is an integer.at n=34A004785
- Number of paraffins.at n=19A006001
- Coordination sequence T5 for Zeolite Code DFO.at n=45A009879
- Numbers k such that k + sum of its prime factors = (k+1) + sum of its prime factors.at n=15A020700
- Number of partitions of n with equal nonzero number of parts congruent to each of 0, 2 and 3 (mod 5).at n=48A035585
- Number of partitions of n into parts 3k and 3k+1 with at least one part of each type.at n=40A035618
- Increasing gaps among twin primes: size.at n=29A036063
- Coordination sequence T9 for Zeolite Code STT.at n=39A038424
- Number of partitions satisfying 0 < cn(2,5) + cn(3,5).at n=28A039897
- Numerators of continued fraction convergents to sqrt(139).at n=7A041254
- Numbers having three 6's in base 8.at n=14A043447
- Numbers n such that string 7,8 occurs in the base 10 representation of n but not of n-1.at n=37A044410
- Numbers n such that string 7,8 occurs in the base 10 representation of n but not of n+1.at n=37A044791
- Smallest composite which when sum of prime factors is repeatedly subtracted reaches a prime after n iterations.at n=17A053093
- Number of basis partitions of n+49 with Durfee square size 7.at n=19A053802
- Product of all distinct numbers formed by permuting digits of n.at n=46A061147
- a(n) = n times R(n) where R(n) (A004086) is the digit reversal of n.at n=47A061205
- Product of all numbers formed by permuting the digits of n.at n=47A061378
- Product of the k numbers formed by cyclically permuting digits of n (where k = number of digits of n).at n=47A062003