30242240 has 112 divisors (see below), whose sum is σ = 86026752. Its totient is φ = 9901056.

The previous prime is 30242239. The next prime is 30242249. The reversal of 30242240 is 4224203.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30242249) 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 15 ways as a sum of consecutive naturals, for example, 51227 + ... + 51813.

It is an arithmetic number, because the mean of its divisors is an integer number (768096).

Almost surely, 2^30242240 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 30242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43013376).

30242240 is an abundant number, since it is smaller than the sum of its proper divisors (55784512).

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

30242240 is a wasteful number, since it uses less digits than its factorization.

30242240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 30242240 is about 5499.2945002064. The cubic root of 30242240 is about 311.5573385050.

Adding to 30242240 its reverse (4224203), we get a palindrome (34466443).

The spelling of 30242240 in words is "thirty million, two hundred forty-two thousand, two hundred forty".