30211216 has 40 divisors (see below), whose sum is σ = 70422080. Its totient is φ = 12265344.

The previous prime is 30211189. The next prime is 30211217. The reversal of 30211216 is 61211203.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a self number, because there is not a number n which added to its sum of digits gives 30211216.

It is not an unprimeable number, because it can be changed into a prime (30211217) 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 7 ways as a sum of consecutive naturals, for example, 4971 + ... + 9226.

It is an arithmetic number, because the mean of its divisors is an integer number (1760552).

Almost surely, 2^30211216 is an apocalyptic number.

It is an amenable number.

30211216 is an abundant number, since it is smaller than the sum of its proper divisors (40210864).

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

30211216 is a wasteful number, since it uses less digits than its factorization.

30211216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14231 (or 14225 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 30211216 is about 5496.4730509664. The cubic root of 30211216 is about 311.4507650285.

Adding to 30211216 its reverse (61211203), we get a palindrome (91422419).

The spelling of 30211216 in words is "thirty million, two hundred eleven thousand, two hundred sixteen".