30149112 has 96 divisors (see below), whose sum is σ = 90616320. Its totient is φ = 8326080.

The previous prime is 30149111. The next prime is 30149123. The reversal of 30149112 is 21194103.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30149111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36043 + ... + 36869.

It is an arithmetic number, because the mean of its divisors is an integer number (943920).

Almost surely, 2^30149112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30149112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45308160).

30149112 is an abundant number, since it is smaller than the sum of its proper divisors (60467208).

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

30149112 is a wasteful number, since it uses less digits than its factorization.

30149112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 30149112 is about 5490.8207036836. The cubic root of 30149112 is about 311.2372062934.

The spelling of 30149112 in words is "thirty million, one hundred forty-nine thousand, one hundred twelve".