30030019 has 4 divisors (see below), whose sum is σ = 31335696. Its totient is φ = 28724344.

The previous prime is 30029969. The next prime is 30030023. The reversal of 30030019 is 91003003.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30030019 - 2²¹ = 27932867 is a prime.

It is a super-2 number, since 2×30030019² = 1803604082280722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30029984 and 30030011.

It is not an unprimeable number, because it can be changed into a prime (30030079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652804 + ... + 652849.

It is an arithmetic number, because the mean of its divisors is an integer number (7833924).

Almost surely, 2^30030019 is an apocalyptic number.

30030019 is a deficient number, since it is larger than the sum of its proper divisors (1305677).

30030019 is a wasteful number, since it uses less digits than its factorization.

30030019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305676.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 30030019 is about 5479.9652371160. The cubic root of 30030019 is about 310.8268560600.

The spelling of 30030019 in words is "thirty million, thirty thousand, nineteen".