30198994 has 12 divisors (see below), whose sum is σ = 52694334. Its totient is φ = 12942384.

The previous prime is 30198989. The next prime is 30198997. The reversal of 30198994 is 49989103.

It can be written as a sum of positive squares in only one way, i.e., 30195025 + 3969 = 5495^2 + 63^2 .

It is a super-2 number, since 2×30198994² = 1823958477224072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30198994.

It is not an unprimeable number, because it can be changed into a prime (30198997) 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 5 ways as a sum of consecutive naturals, for example, 153979 + ... + 154174.

Almost surely, 2^30198994 is an apocalyptic number.

30198994 is a deficient number, since it is larger than the sum of its proper divisors (22495340).

30198994 is a wasteful number, since it uses less digits than its factorization.

30198994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308169 (or 308162 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 30198994 is about 5495.3611346298. The cubic root of 30198994 is about 311.4087600473.

The spelling of 30198994 in words is "thirty million, one hundred ninety-eight thousand, nine hundred ninety-four".