1400
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 5
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 3720
- Proper Divisor Sum (Aliquot Sum)
- 2320
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 480
- Möbius Function
- 0
- Radical
- 70
- Omega Function (Ω)
- 6
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 83
- 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
- yes
- Odd
- no
Appears in sequences
- Squares written in base 5.at n=15A001740
- Hit polynomials.at n=5A001889
- Prime numbers of measurement.at n=35A002049
- Triangle read by rows: the Bell transform of the triple factorial numbers A008544 without column 0.at n=33A004747
- Coefficients of modular function g_6(tau).at n=3A005759
- Numbers k such that k*3^k + 1 is prime.at n=6A006552
- Number of indefinitely growing n-step self-avoiding walks on Manhattan lattice.at n=12A006745
- Numbers k such that sigma(x) = k has exactly 3 solutions.at n=37A007372
- Number of unlabeled connected series-parallel posets with n nodes.at n=7A007453
- Number of sum-free subsets of {1, ..., n}.at n=15A007865
- Coordination sequence T10 for Zeolite Code EUO.at n=23A008096
- Expansion of exp(tanh(x)*sin(x)).at n=4A009270
- Expansion of tanh(log(1+x)*exp(x)).at n=7A009785
- Coordination sequence T5 for Zeolite Code VET.at n=23A009906
- Coordination sequence T1 for Zeolite Code VSV.at n=24A009914
- Coordination sequence T2 for Zeolite Code WEI.at n=26A009918
- Numbers n such that phi(n) + sigma(n) = 3n.at n=3A011251
- Nonprimes k that divide sigma(k) + phi(k).at n=4A011774
- Expansion of e.g.f.: sech(exp(x)*log(x+1)).at n=7A012280
- exp(tanh(x)*arcsinh(x))=1+2/2!*x^2-50/6!*x^6+1400/8!*x^8-35222/10!*x^10...at n=4A012694