4570
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
- 8
- Divisor Sum
- 8244
- Proper Divisor Sum (Aliquot Sum)
- 3674
- 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
- 1824
- Möbius Function
- -1
- Radical
- 4570
- 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
- 33
- 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
- Coordination sequence T3 for Zeolite Code GOO.at n=46A008113
- Nearest integer to Gamma(n + 3/8)/Gamma(3/8).at n=8A020027
- Ceiling of Gamma(n+3/8)/Gamma(3/8).at n=8A020117
- Numbers k such that the continued fraction for sqrt(k) has period 15.at n=24A020354
- a(n) = A027052(n, 2n-1).at n=10A027056
- Number of proper factorizations of p1^n*p2^6, where p1 and p2 are distinct primes.at n=9A031129
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 14.at n=5A031602
- "DHK[ 5 ]" (bracelet, identity, unlabeled, 5 parts) transform of 1,1,1,1,...at n=27A032246
- Shifts left under Weigh transform.at n=36A038073
- Gaps of 7 in sequence A038593 (upper terms).at n=18A038654
- Numbers that are divisible by 5 and are the difference between two (different positive) cubes in at least one way.at n=21A038853
- Numbers that are divisible by 10 and are differences between two cubes in at least one way.at n=6A038854
- a(n) = T(2*n+1, n), array T as in A047080.at n=8A047086
- At stage 1, start with a unit square. At each successive stage add 4*(n-1) new squares around outside with edge-to-edge contacts. Sequence gives number of squares (regardless of size) at n-th stage.at n=18A056640
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 92 ).at n=30A063365
- Least k such that k*10^n+1, k*10^n+3, k*10^n+7 and k*10^n+9 are all prime.at n=17A064281
- Regard A064413 as giving a permutation of the positive integers; sequence gives second infinite cycle, beginning at its smallest term, 73.at n=41A064667
- Numbers m such that A076644(m) = floor((2/3)*m*(sqrt(m)+1)).at n=23A076660
- Natural numbers of the form p^3 - q^3, where p and q are primes.at n=18A086120
- Positive sums or differences of two cubes of primes.at n=39A086121