30180539928 has 128 divisors (see below), whose sum is σ = 94288965120. Its totient is φ = 7820789760.

The previous prime is 30180539923. The next prime is 30180539951. The reversal of 30180539928 is 82993508103.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30180539923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781326 + ... + 819042.

It is an arithmetic number, because the mean of its divisors is an integer number (736632540).

Almost surely, 2^30180539928 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 30180539928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47144482560).

30180539928 is an abundant number, since it is smaller than the sum of its proper divisors (64108425192).

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

30180539928 is a wasteful number, since it uses less digits than its factorization.

30180539928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38177 (or 38173 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 30180539928 in words is "thirty billion, one hundred eighty million, five hundred thirty-nine thousand, nine hundred twenty-eight".