30005019 has 16 divisors (see below), whose sum is σ = 48493440. Its totient is φ = 18184680.

The previous prime is 30005011. The next prime is 30005023. The reversal of 30005019 is 91050003.

It is not a de Polignac number, because 30005019 - 2³ = 30005011 is a prime.

It is a super-2 number, since 2×30005019² = 1800602330380722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30004992 and 30005010.

It is not an unprimeable number, because it can be changed into a prime (30005011) 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, 50217 + ... + 50810.

It is an arithmetic number, because the mean of its divisors is an integer number (3030840).

Almost surely, 2^30005019 is an apocalyptic number.

30005019 is a deficient number, since it is larger than the sum of its proper divisors (18488421).

30005019 is a wasteful number, since it uses less digits than its factorization.

30005019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101047 (or 101041 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 30005019 is about 5477.6837258097. The cubic root of 30005019 is about 310.7405776291.

The spelling of 30005019 in words is "thirty million, five thousand, nineteen".