30301240 has 64 divisors (see below), whose sum is σ = 70963200. Its totient is φ = 11636352.

The previous prime is 30301199. The next prime is 30301241. The reversal of 30301240 is 4210303.

It is a self number, because there is not a number n which added to its sum of digits gives 30301240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30301241) 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, 135769 + ... + 135991.

It is an arithmetic number, because the mean of its divisors is an integer number (1108800).

Almost surely, 2^30301240 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 30301240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35481600).

30301240 is an abundant number, since it is smaller than the sum of its proper divisors (40661960).

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

30301240 is a wasteful number, since it uses less digits than its factorization.

30301240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30301240 is about 5504.6562108818. The cubic root of 30301240 is about 311.7598140501.

Adding to 30301240 its reverse (4210303), we get a palindrome (34511543).

The spelling of 30301240 in words is "thirty million, three hundred one thousand, two hundred forty".