30528039 has 16 divisors (see below), whose sum is σ = 44586720. Its totient is φ = 18493440.

The previous prime is 30528011. The next prime is 30528119. The reversal of 30528039 is 93082503.

It is a happy number.

It is not a de Polignac number, because 30528039 - 2⁵ = 30528007 is a prime.

It is a super-2 number, since 2×30528039² = 1863922330371042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30527997 and 30528015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30528539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8842 + ... + 11799.

It is an arithmetic number, because the mean of its divisors is an integer number (2786670).

Almost surely, 2^30528039 is an apocalyptic number.

30528039 is a deficient number, since it is larger than the sum of its proper divisors (14058681).

30528039 is a wasteful number, since it uses less digits than its factorization.

30528039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20690.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 30528039 is about 5525.2184572196. The cubic root of 30528039 is about 312.5357023743.

The spelling of 30528039 in words is "thirty million, five hundred twenty-eight thousand, thirty-nine".