30887930 has 16 divisors (see below), whose sum is σ = 56782080. Its totient is φ = 12092112.

The previous prime is 30887917. The next prime is 30887957. The reversal of 30887930 is 3978803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32390 + ... + 33329.

It is an arithmetic number, because the mean of its divisors is an integer number (3548880).

Almost surely, 2^30887930 is an apocalyptic number.

30887930 is a deficient number, since it is larger than the sum of its proper divisors (25894150).

30887930 is a wasteful number, since it uses less digits than its factorization.

30887930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65773.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 30887930 is about 5557.6910673408. The cubic root of 30887930 is about 313.7590548859.

The spelling of 30887930 in words is "thirty million, eight hundred eighty-seven thousand, nine hundred thirty".