30487728540 has 24 divisors (see below), whose sum is σ = 85365640080. Its totient is φ = 8130060928.

The previous prime is 30487728511. The next prime is 30487728547. The reversal of 30487728540 is 4582778403.

It is a self number, because there is not a number n which added to its sum of digits gives 30487728540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30487728547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254064345 + ... + 254064464.

It is an arithmetic number, because the mean of its divisors is an integer number (3556901670).

Almost surely, 2^30487728540 is an apocalyptic number.

30487728540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30487728540 is an abundant number, since it is smaller than the sum of its proper divisors (54877911540).

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

30487728540 is a wasteful number, since it uses less digits than its factorization.

30487728540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508128821 (or 508128819 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 30487728540 in words is "thirty billion, four hundred eighty-seven million, seven hundred twenty-eight thousand, five hundred forty".