30204181 has 8 divisors (see below), whose sum is σ = 35005824. Its totient is φ = 25524240.

The previous prime is 30204143. The next prime is 30204191. The reversal of 30204181 is 18140203.

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

It is a de Polignac number, because none of the positive numbers 2^k-30204181 is a prime.

It is a super-2 number, since 2×30204181² = 1824585099761522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30204191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29890 + ... + 30883.

It is an arithmetic number, because the mean of its divisors is an integer number (4375728).

Almost surely, 2^30204181 is an apocalyptic number.

It is an amenable number.

30204181 is a deficient number, since it is larger than the sum of its proper divisors (4801643).

30204181 is an equidigital number, since it uses as much as digits as its factorization.

30204181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60851.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 30204181 is about 5495.8330578721. The cubic root of 30204181 is about 311.4265882876.

Adding to 30204181 its reverse (18140203), we get a palindrome (48344384).

The spelling of 30204181 in words is "thirty million, two hundred four thousand, one hundred eighty-one".