2375
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 3120
- Proper Divisor Sum (Aliquot Sum)
- 745
- 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
- 1800
- Möbius Function
- 0
- Radical
- 95
- Omega Function (Ω)
- 4
- 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
- 164
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Coefficients for step-by-step integration.at n=5A002401
- Number of coprime chains with largest member prime(n).at n=22A003140
- Necklace permutations.at n=8A003322
- Number of steps to compute n-th prime in PRIMEGAME (slow version).at n=4A007547
- Coordination sequence T1 for Zeolite Code -CLO.at n=43A009850
- Coordination sequence T3 for Zeolite Code -WEN.at n=35A009864
- a(n) = floor( n*(n-1)*(n-2)/29 ).at n=42A011911
- n-th composite is sum of first k composites for some k.at n=48A020642
- Expansion of Product_{m>=1} (1-m*q^m)^-10.at n=4A022734
- a(n) = (d(n)-r(n))/5, where d = A026057 and r is the periodic sequence with fundamental period (1,0,3,1,0).at n=34A026059
- Positions of record values in A030727.at n=43A030732
- "BGK" (reversible, element, unlabeled) transform of 1,0,1,0,...at n=44A032059
- Partial sums of A000009 (partitions into distinct parts).at n=31A036469
- Gaps of 7 in sequence A038593 (upper terms).at n=13A038654
- Numbers that are divisible by 5 and are the difference between two (different positive) cubes in at least one way.at n=12A038853
- Numbers ending with '5' that are the difference of two positive cubes.at n=9A038860
- a(n) = (n+5)^3 - n^3.at n=10A038867
- Numbers having three 5's in base 6.at n=24A043391
- Numbers n such that string 0,7 occurs in the base 8 representation of n but not of n-1.at n=40A044194
- Numbers k such that the string 2,8 occurs in the base 9 representation of k but not of k-1.at n=32A044277