30140003440 has 20 divisors (see below), whose sum is σ = 70075508184. Its totient is φ = 12056001344.

The previous prime is 30140003389. The next prime is 30140003441. The reversal of 30140003440 is 4430004103.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30140003441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188374942 + ... + 188375101.

Almost surely, 2^30140003440 is an apocalyptic number.

It is an amenable number.

30140003440 is an abundant number, since it is smaller than the sum of its proper divisors (39935504744).

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

30140003440 is a wasteful number, since it uses less digits than its factorization.

30140003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376750056 (or 376750050 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 30140003440 its reverse (4430004103), we get a palindrome (34570007543).

The spelling of 30140003440 in words is "thirty billion, one hundred forty million, three thousand, four hundred forty".