30111252 has 12 divisors (see below), whose sum is σ = 70259616. Its totient is φ = 10037080.

The previous prime is 30111241. The next prime is 30111271. The reversal of 30111252 is 25211103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 1254624 + ... + 1254647.

It is an arithmetic number, because the mean of its divisors is an integer number (5854968).

Almost surely, 2^30111252 is an apocalyptic number.

It is an amenable number.

30111252 is an abundant number, since it is smaller than the sum of its proper divisors (40148364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30111252 is a wasteful number, since it uses less digits than its factorization.

30111252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509278 (or 2509276 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 30111252 is about 5487.3720486222. The cubic root of 30111252 is about 311.1068721456.

Adding to 30111252 its reverse (25211103), we get a palindrome (55322355).

The spelling of 30111252 in words is "thirty million, one hundred eleven thousand, two hundred fifty-two".