30528012 has 24 divisors (see below), whose sum is σ = 72237312. Its totient is φ = 10032400.

The previous prime is 30528011. The next prime is 30528119. The reversal of 30528012 is 21082503.

It is a self number, because there is not a number n which added to its sum of digits gives 30528012.

It is not an unprimeable number, because it can be changed into a prime (30528011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17064 + ... + 18767.

It is an arithmetic number, because the mean of its divisors is an integer number (3009888).

Almost surely, 2^30528012 is an apocalyptic number.

It is an amenable number.

30528012 is an abundant number, since it is smaller than the sum of its proper divisors (41709300).

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

30528012 is a wasteful number, since it uses less digits than its factorization.

30528012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35909 (or 35907 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 30528012 is about 5525.2160138767. The cubic root of 30528012 is about 312.5356102353.

The spelling of 30528012 in words is "thirty million, five hundred twenty-eight thousand, twelve".