29805928 has 16 divisors (see below), whose sum is σ = 56941380. Its totient is φ = 14621568.

The previous prime is 29805917. The next prime is 29805931. The reversal of 29805928 is 82950892.

It can be written as a sum of positive squares in 2 ways, for example, as 28068804 + 1737124 = 5298^2 + 1318^2 .

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 3 ways as a sum of consecutive naturals, for example, 34725 + ... + 35572.

Almost surely, 2^29805928 is an apocalyptic number.

It is an amenable number.

29805928 is a deficient number, since it is larger than the sum of its proper divisors (27135452).

29805928 is a wasteful number, since it uses less digits than its factorization.

29805928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70356 (or 70352 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 29805928 is about 5459.4805613721. The cubic root of 29805928 is about 310.0517707501.

The spelling of 29805928 in words is "twenty-nine million, eight hundred five thousand, nine hundred twenty-eight".