30278138128 has 80 divisors (see below), whose sum is σ = 67404324736. Its totient is φ = 12906915840.

The previous prime is 30278138113. The next prime is 30278138129. The reversal of 30278138128 is 82183187203.

It is not an unprimeable number, because it can be changed into a prime (30278138129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20416075 + ... + 20417557.

Almost surely, 2^30278138128 is an apocalyptic number.

It is an amenable number.

30278138128 is an abundant number, since it is smaller than the sum of its proper divisors (37126186608).

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

30278138128 is a wasteful number, since it uses less digits than its factorization.

30278138128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352 (or 2346 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 30278138128 in words is "thirty billion, two hundred seventy-eight million, one hundred thirty-eight thousand, one hundred twenty-eight".