30000128 has 22 divisors (see below), whose sum is σ = 59973006. Its totient is φ = 14999552.

The previous prime is 30000109. The next prime is 30000133. The reversal of 30000128 is 82100003.

It can be written as a sum of positive squares in only one way, i.e., 27541504 + 2458624 = 5248^2 + 1568^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13625 + ... + 15672.

Almost surely, 2^30000128 is an apocalyptic number.

It is an amenable number.

30000128 is a deficient number, since it is larger than the sum of its proper divisors (29972878).

30000128 is an equidigital number, since it uses as much as digits as its factorization.

30000128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29317 (or 29299 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 30000128 is about 5477.2372597871. The cubic root of 30000128 is about 310.7236925123.

The spelling of 30000128 in words is "thirty million, one hundred twenty-eight", and thus it is an aban number.