30205156 has 12 divisors (see below), whose sum is σ = 53047792. Its totient is φ = 15048648.

The previous prime is 30205139. The next prime is 30205157. The reversal of 30205156 is 65150203.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30205157) 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 3 ways as a sum of consecutive naturals, for example, 12210 + ... + 14473.

Almost surely, 2^30205156 is an apocalyptic number.

It is an amenable number.

30205156 is a deficient number, since it is larger than the sum of its proper divisors (22842636).

30205156 is a wasteful number, since it uses less digits than its factorization.

30205156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26970 (or 26968 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 30205156 is about 5495.9217607240. The cubic root of 30205156 is about 311.4299392327.

Adding to 30205156 its reverse (65150203), we get a palindrome (95355359).

The spelling of 30205156 in words is "thirty million, two hundred five thousand, one hundred fifty-six".