30195798 has 16 divisors (see below), whose sum is σ = 62340096. Its totient is φ = 9740520.

The previous prime is 30195797. The next prime is 30195799. The reversal of 30195798 is 89759103.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30195797) and next prime (30195799).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30195797) 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, 80986 + ... + 81357.

It is an arithmetic number, because the mean of its divisors is an integer number (3896256).

Almost surely, 2^30195798 is an apocalyptic number.

30195798 is an abundant number, since it is smaller than the sum of its proper divisors (32144298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30195798 is a wasteful number, since it uses less digits than its factorization.

30195798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162379.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 30195798 is about 5495.0703362195. The cubic root of 30195798 is about 311.3977740576.

The spelling of 30195798 in words is "thirty million, one hundred ninety-five thousand, seven hundred ninety-eight".