30019345 has 8 divisors (see below), whose sum is σ = 36052776. Its totient is φ = 23995776.

The previous prime is 30019343. The next prime is 30019387. The reversal of 30019345 is 54391003.

It can be written as a sum of positive squares in 4 ways, for example, as 21446161 + 8573184 = 4631^2 + 2928^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30019345 - 2¹ = 30019343 is a prime.

It is a super-2 number, since 2×30019345² = 1802322148458050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30019343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9709 + ... + 12421.

It is an arithmetic number, because the mean of its divisors is an integer number (4506597).

Almost surely, 2^30019345 is an apocalyptic number.

It is an amenable number.

30019345 is a deficient number, since it is larger than the sum of its proper divisors (6033431).

30019345 is a wasteful number, since it uses less digits than its factorization.

30019345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4931.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 30019345 is about 5478.9912392702. The cubic root of 30019345 is about 310.7900244812.

The spelling of 30019345 in words is "thirty million, nineteen thousand, three hundred forty-five".