2402
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3606
- Proper Divisor Sum (Aliquot Sum)
- 1204
- 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
- 1200
- Möbius Function
- 1
- Radical
- 2402
- 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
- 58
- 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
- yes
- Odd
- no
Appears in sequences
- sigma_4(n): sum of 4th powers of divisors of n.at n=6A001159
- Numbers k such that phi(k) = phi(k+2).at n=38A001494
- a(n) = n^2 + 1.at n=49A002522
- a(n) = n^4 + 1.at n=7A002523
- Numbers that are the sum of 2 positive 4th powers.at n=20A003336
- Numbers that are the sum of at most 2 nonzero 4th powers.at n=28A004831
- a(n) = a(n-1) + a(n-6), with a(i) = 1 for i = 0..5.at n=34A005708
- a(n) = 6*n^2 + 2 for n > 0, a(0)=1.at n=20A005897
- Generalized Fibonacci numbers A_{n,4}.at n=29A006209
- Coordination sequence T2 for Zeolite Code DAC.at n=31A008068
- Coordination sequence T1 for Zeolite Code LTN.at n=34A008140
- Coordination sequence T5 for Zeolite Code MFI.at n=31A008168
- a(0) = 1, a(n) = 24*n^2 + 2 for n>0.at n=10A010014
- Coordination sequence T3 for Zeolite Code OSI.at n=32A016432
- Numerator of sum of -4th powers of divisors of n.at n=6A017671
- Expansion of 1/(1 - x^6 - x^7 - x^8 - ...).at n=40A017900
- Cyclotomic polynomials at x=7.at n=8A019325
- Cyclotomic polynomials at x = -7.at n=8A020506
- Numbers whose least quadratic nonresidue (A020649) is 11.at n=14A025024
- Numbers k such that k^2 is palindromic in base 7.at n=26A029992