30425128 has 8 divisors (see below), whose sum is σ = 57047130. Its totient is φ = 15212560.

The previous prime is 30425111. The next prime is 30425149. The reversal of 30425128 is 82152403.

It can be written as a sum of positive squares in only one way, i.e., 23444964 + 6980164 = 4842^2 + 2642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901563 + ... + 1901578.

Almost surely, 2^30425128 is an apocalyptic number.

It is an amenable number.

30425128 is a deficient number, since it is larger than the sum of its proper divisors (26622002).

30425128 is a wasteful number, since it uses less digits than its factorization.

30425128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803147 (or 3803143 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 30425128 is about 5515.8977510465. The cubic root of 30425128 is about 312.1841177131.

The spelling of 30425128 in words is "thirty million, four hundred twenty-five thousand, one hundred twenty-eight".