2995
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3600
- Proper Divisor Sum (Aliquot Sum)
- 605
- 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
- 2392
- Möbius Function
- 1
- Radical
- 2995
- Omega Function (Ω)
- 2
- 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
- 48
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- a(n) = floor(1000*log(n)).at n=19A004240
- 11*n^2 + 11*n + 3.at n=16A006222
- Coordination sequence T3 for Zeolite Code DAC.at n=34A008069
- Coordination sequence T2 for Zeolite Code EMT.at n=45A008087
- Coordination sequence T2 for Zeolite Code MTW.at n=36A008197
- Coordination sequence T5 for Zeolite Code NES.at n=35A008209
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RTH = RUB-13 [B2Si30O64].2R starting with a T1 atom.at n=11A019226
- Fibonacci sequence beginning 3, 11.at n=13A022123
- Molien series for group Gamma_{3,0}(2).at n=16A027632
- Numbers k such that 149*2^k+1 is prime.at n=23A032424
- Number of partitions of n into parts not of the form 19k, 19k+4 or 19k-4. Also number of partitions with at most 3 parts of size 1 and differences between parts at distance 8 are greater than 1.at n=29A035973
- Composite numbers whose prime factors contain no digits other than 5 and 9.at n=5A036321
- Molien series for 3-D group R2+R3.at n=29A037242
- Numbers n such that string 9,5 occurs in the base 10 representation of n but not of n-1.at n=32A044427
- Numbers k such that string 9,5 occurs in the base 10 representation of k but not of k+1.at n=32A044808
- Numbers whose base-5 representation contains exactly one 0 and three 4's.at n=32A045209
- Triangle of rooted identity trees with n nodes and k leaves.at n=60A055327
- Number of rooted identity trees with n nodes and 4 leaves.at n=8A055329
- Numbers k such that floor(Pi*k) is a square.at n=33A061812
- Composite and every divisor (except 1) contains the digit 5.at n=27A062672