30112240 has 40 divisors (see below), whose sum is σ = 70651728. Its totient is φ = 11934720.

The previous prime is 30112217. The next prime is 30112249. The reversal of 30112240 is 4221103.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 30112240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30112249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7375 + ... + 10705.

Almost surely, 2^30112240 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 30112240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35325864).

30112240 is an abundant number, since it is smaller than the sum of its proper divisors (40539488).

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

30112240 is a wasteful number, since it uses less digits than its factorization.

30112240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3457 (or 3451 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 30112240 is about 5487.4620727619. The cubic root of 30112240 is about 311.1102747521.

Adding to 30112240 its reverse (4221103), we get a palindrome (34333343).

The spelling of 30112240 in words is "thirty million, one hundred twelve thousand, two hundred forty".