30118212 has 36 divisors (see below), whose sum is σ = 76383216. Its totient is φ = 10006320.

The previous prime is 30118199. The next prime is 30118213. The reversal of 30118212 is 21281103.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30118213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11287 + ... + 13697.

It is an arithmetic number, because the mean of its divisors is an integer number (2121756).

Almost surely, 2^30118212 is an apocalyptic number.

It is an amenable number.

30118212 is an abundant number, since it is smaller than the sum of its proper divisors (46265004).

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

30118212 is a wasteful number, since it uses less digits than its factorization.

30118212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 30118212 is about 5488.0061953318. The cubic root of 30118212 is about 311.1308403399.

Adding to 30118212 its reverse (21281103), we get a palindrome (51399315).

The spelling of 30118212 in words is "thirty million, one hundred eighteen thousand, two hundred twelve".