30403189 has 4 divisors (see below), whose sum is σ = 30562560. Its totient is φ = 30243820.

The previous prime is 30403183. The next prime is 30403213. The reversal of 30403189 is 98130403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30403189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30403183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79399 + ... + 79780.

It is an arithmetic number, because the mean of its divisors is an integer number (7640640).

Almost surely, 2^30403189 is an apocalyptic number.

It is an amenable number.

30403189 is a deficient number, since it is larger than the sum of its proper divisors (159371).

30403189 is a wasteful number, since it uses less digits than its factorization.

30403189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159370.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30403189 is about 5513.9086862225. The cubic root of 30403189 is about 312.1090629289.

The spelling of 30403189 in words is "thirty million, four hundred three thousand, one hundred eighty-nine".