30939834 has 16 divisors (see below), whose sum is σ = 62078688. Its totient is φ = 10280112.

The previous prime is 30939817. The next prime is 30939841. The reversal of 30939834 is 43893903.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30939792 and 30939801.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6232 + ... + 10035.

It is an arithmetic number, because the mean of its divisors is an integer number (3879918).

Almost surely, 2^30939834 is an apocalyptic number.

30939834 is an abundant number, since it is smaller than the sum of its proper divisors (31138854).

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

30939834 is a wasteful number, since it uses less digits than its factorization.

30939834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16589.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 30939834 is about 5562.3586723619. The cubic root of 30939834 is about 313.9347031790.

The spelling of 30939834 in words is "thirty million, nine hundred thirty-nine thousand, eight hundred thirty-four".