30478138368 has 88 divisors (see below), whose sum is σ = 82024894848. Its totient is φ = 10060640256.

The previous prime is 30478138367. The next prime is 30478138387. The reversal of 30478138368 is 86383187403.

It is a self number, because there is not a number n which added to its sum of digits gives 30478138368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30478138367) 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, 268255 + ... + 364577.

Almost surely, 2^30478138368 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 30478138368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41012447424).

30478138368 is an abundant number, since it is smaller than the sum of its proper divisors (51546756480).

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

30478138368 is a wasteful number, since it uses less digits than its factorization.

30478138368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96449 (or 96431 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 30478138368 in words is "thirty billion, four hundred seventy-eight million, one hundred thirty-eight thousand, three hundred sixty-eight".