30658938440 has 64 divisors (see below), whose sum is σ = 74526706800. Its totient is φ = 11283996672.

The previous prime is 30658938437. The next prime is 30658938463. The reversal of 30658938440 is 4483985603.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3703209316 + 26955729124 = 60854^2 + 164182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68576 + ... + 256944.

Almost surely, 2^30658938440 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 30658938440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37263353400).

30658938440 is an abundant number, since it is smaller than the sum of its proper divisors (43867768360).

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

30658938440 is a wasteful number, since it uses less digits than its factorization.

30658938440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188706 (or 188702 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 30658938440 in words is "thirty billion, six hundred fifty-eight million, nine hundred thirty-eight thousand, four hundred forty".