30020004240 has 80 divisors (see below), whose sum is σ = 96271070400. Its totient is φ = 7729286656.

The previous prime is 30020004233. The next prime is 30020004257. The reversal of 30020004240 is 4240002003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2149650 + ... + 2163569.

It is an arithmetic number, because the mean of its divisors is an integer number (1203388380).

Almost surely, 2^30020004240 is an apocalyptic number.

30020004240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30020004240 is an abundant number, since it is smaller than the sum of its proper divisors (66251066160).

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

30020004240 is a wasteful number, since it uses less digits than its factorization.

30020004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313264 (or 4313258 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 30020004240 its reverse (4240002003), we get a palindrome (34260006243).

The spelling of 30020004240 in words is "thirty billion, twenty million, four thousand, two hundred forty".