30199185 has 12 divisors (see below), whose sum is σ = 52345332. Its totient is φ = 16106208.

The previous prime is 30199181. The next prime is 30199219. The reversal of 30199185 is 58199103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18584721 + 11614464 = 4311^2 + 3408^2 .

It is not a de Polignac number, because 30199185 - 2² = 30199181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30199181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335502 + ... + 335591.

It is an arithmetic number, because the mean of its divisors is an integer number (4362111).

Almost surely, 2^30199185 is an apocalyptic number.

It is an amenable number.

30199185 is a deficient number, since it is larger than the sum of its proper divisors (22146147).

30199185 is a wasteful number, since it uses less digits than its factorization.

30199185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671104 (or 671101 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 30199185 is about 5495.3785128961. The cubic root of 30199185 is about 311.4094165697.

The spelling of 30199185 in words is "thirty million, one hundred ninety-nine thousand, one hundred eighty-five".