30329128 has 16 divisors (see below), whose sum is σ = 58828500. Its totient is φ = 14641536.

The previous prime is 30329119. The next prime is 30329137. The reversal of 30329128 is 82192303.

It is an interprime number because it is at equal distance from previous prime (30329119) and next prime (30329137).

It can be written as a sum of positive squares in 2 ways, for example, as 30228004 + 101124 = 5498^2 + 318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30329096 and 30329105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65133 + ... + 65596.

Almost surely, 2^30329128 is an apocalyptic number.

It is an amenable number.

30329128 is a deficient number, since it is larger than the sum of its proper divisors (28499372).

30329128 is a wasteful number, since it uses less digits than its factorization.

30329128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130764 (or 130760 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30329128 is about 5507.1887565254. The cubic root of 30329128 is about 311.8554283082.

The spelling of 30329128 in words is "thirty million, three hundred twenty-nine thousand, one hundred twenty-eight".