30189802 has 8 divisors (see below), whose sum is σ = 45308196. Its totient is φ = 15087072.

The previous prime is 30189791. The next prime is 30189811. The reversal of 30189802 is 20898103.

It can be written as a sum of positive squares in 2 ways, for example, as 29909961 + 279841 = 5469^2 + 529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×30189802² = 1822848289598408, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4668 + ... + 9064.

Almost surely, 2^30189802 is an apocalyptic number.

30189802 is a deficient number, since it is larger than the sum of its proper divisors (15118394).

30189802 is a wasteful number, since it uses less digits than its factorization.

30189802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 30189802 is about 5494.5247292191. The cubic root of 30189802 is about 311.3771612044.

The spelling of 30189802 in words is "thirty million, one hundred eighty-nine thousand, eight hundred two".