30240040 has 64 divisors (see below), whose sum is σ = 71280000. Its totient is φ = 11531520.

The previous prime is 30240017. The next prime is 30240053. The reversal of 30240040 is 4004203.

It is a self number, because there is not a number n which added to its sum of digits gives 30240040.

It is an unprimeable number.

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, 151861 + ... + 152059.

It is an arithmetic number, because the mean of its divisors is an integer number (1113750).

Almost surely, 2^30240040 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 30240040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35640000).

30240040 is an abundant number, since it is smaller than the sum of its proper divisors (41039960).

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

30240040 is a wasteful number, since it uses less digits than its factorization.

30240040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 30240040 is about 5499.0944709106. The cubic root of 30240040 is about 311.5497834786.

Adding to 30240040 its reverse (4004203), we get a palindrome (34244243).

The spelling of 30240040 in words is "thirty million, two hundred forty thousand, forty".