30105219 has 16 divisors (see below), whose sum is σ = 42314400. Its totient is φ = 19009536.

The previous prime is 30105209. The next prime is 30105307. The reversal of 30105219 is 91250103.

It is not a de Polignac number, because 30105219 - 2¹⁶ = 30039683 is a prime.

It is a super-2 number, since 2×30105219² = 1812648422075922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30105195 and 30105204.

It is not an unprimeable number, because it can be changed into a prime (30105209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347 + ... + 7875.

It is an arithmetic number, because the mean of its divisors is an integer number (2644650).

Almost surely, 2^30105219 is an apocalyptic number.

30105219 is a deficient number, since it is larger than the sum of its proper divisors (12209181).

30105219 is a wasteful number, since it uses less digits than its factorization.

30105219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 30105219 is about 5486.8223043944. The cubic root of 30105219 is about 311.0860932783.

The spelling of 30105219 in words is "thirty million, one hundred five thousand, two hundred nineteen".