2839714

Appears in sequences

• Numbers k that divide 5^k + 3^k.at n=10A045585
• Numbers k that divide 10^k + 6^k.at n=37A045603
• Numbers whose product of distinct prime factors is equal to its sum of digits.at n=28A067077
• Sum of two powers of 17.at n=20A073213
• Numbers k that divide 3^(k^3) + 1.at n=14A092408
• n*phi(n)*phi(phi(n)) is a fourth power.at n=13A116003
• Denominator of Euler(n, 1/17).at n=5A156531
• Numbers m such that phi(m) is a power of the product of the distinct prime factors of m.at n=38A211413
• a(n) = Sum_{d|n} max(d, n/d)^4.at n=33A297843
• a(n) = Sum_{d|n} max(d, n/d)^5.at n=16A297844
• Numbers m such that phi(m) = rad(m)^4, where phi is the Euler totient function (A000010) and rad is the squarefree kernel function (A007947).at n=4A328275
• a(n) is the least natural k which is a multiple of prime(n) such that for some m >= 0, phi(k) = rad(k)^m, where phi(k) = A000010(k) and rad(k) = A007947(k).at n=6A337775
• Numbers k such that the sum of the distinct digits of k is equal to the product of the prime divisors of k.at n=27A357263