29985728 has 14 divisors (see below), whose sum is σ = 59503056. Its totient is φ = 14992832.

The previous prime is 29985701. The next prime is 29985733. The reversal of 29985728 is 82758992.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 234200 + ... + 234327.

Almost surely, 2^29985728 is an apocalyptic number.

It is an amenable number.

29985728 is a deficient number, since it is larger than the sum of its proper divisors (29517328).

29985728 is an equidigital number, since it uses as much as digits as its factorization.

29985728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468539 (or 468529 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 29985728 is about 5475.9225706725. The cubic root of 29985728 is about 310.6739689770.

The spelling of 29985728 in words is "twenty-nine million, nine hundred eighty-five thousand, seven hundred twenty-eight".