30685329 has 6 divisors (see below), whose sum is σ = 44323266. Its totient is φ = 20456880.

The previous prime is 30685327. The next prime is 30685351. The reversal of 30685329 is 92358603.

It can be written as a sum of positive squares in only one way, i.e., 28515600 + 2169729 = 5340^2 + 1473^2 .

It is not a de Polignac number, because 30685329 - 2¹ = 30685327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30685293 and 30685302.

It is not an unprimeable number, because it can be changed into a prime (30685327) 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 5 ways as a sum of consecutive naturals, for example, 1704732 + ... + 1704749.

It is an arithmetic number, because the mean of its divisors is an integer number (7387211).

Almost surely, 2^30685329 is an apocalyptic number.

It is an amenable number.

30685329 is a deficient number, since it is larger than the sum of its proper divisors (13637937).

30685329 is a wasteful number, since it uses less digits than its factorization.

30685329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409487 (or 3409484 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 30685329 is about 5539.4339963574. The cubic root of 30685329 is about 313.0715436970.

The spelling of 30685329 in words is "thirty million, six hundred eighty-five thousand, three hundred twenty-nine".