30748212 has 36 divisors (see below), whose sum is σ = 84791616. Its totient is φ = 9317520.

The previous prime is 30748169. The next prime is 30748219. The reversal of 30748212 is 21284703.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30748219) 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 11 ways as a sum of consecutive naturals, for example, 38428 + ... + 39219.

Almost surely, 2^30748212 is an apocalyptic number.

It is an amenable number.

30748212 is an abundant number, since it is smaller than the sum of its proper divisors (54043404).

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

30748212 is a wasteful number, since it uses less digits than its factorization.

30748212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77668 (or 77663 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 30748212 is about 5545.1070323304. The cubic root of 30748212 is about 313.2852554370.

The spelling of 30748212 in words is "thirty million, seven hundred forty-eight thousand, two hundred twelve".