30020189 has 2 divisors, whose sum is σ = 30020190. Its totient is φ = 30020188.

The previous prime is 30020173. The next prime is 30020213. The reversal of 30020189 is 98102003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21696964 + 8323225 = 4658^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 30020189 - 2⁴ = 30020173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30020119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010094 + 15010095.

It is an arithmetic number, because the mean of its divisors is an integer number (15010095).

Almost surely, 2^30020189 is an apocalyptic number.

It is an amenable number.

30020189 is a deficient number, since it is larger than the sum of its proper divisors (1).

30020189 is an equidigital number, since it uses as much as digits as its factorization.

30020189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 30020189 is about 5479.0682602063. The cubic root of 30020189 is about 310.7929370956.

The spelling of 30020189 in words is "thirty million, twenty thousand, one hundred eighty-nine".