30342034640 has 20 divisors (see below), whose sum is σ = 70545230724. Its totient is φ = 12136813824.

The previous prime is 30342034637. The next prime is 30342034649. The reversal of 30342034640 is 4643024303.

It can be written as a sum of positive squares in 2 ways, for example, as 9047053456 + 21294981184 = 95116^2 + 145928^2 .

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 (30342034649) 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, 189637637 + ... + 189637796.

Almost surely, 2^30342034640 is an apocalyptic number.

It is an amenable number.

30342034640 is an abundant number, since it is smaller than the sum of its proper divisors (40203196084).

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

30342034640 is a wasteful number, since it uses less digits than its factorization.

30342034640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379275446 (or 379275440 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 30342034640 its reverse (4643024303), we get a palindrome (34985058943).

The spelling of 30342034640 in words is "thirty billion, three hundred forty-two million, thirty-four thousand, six hundred forty".