29920686 has 16 divisors (see below), whose sum is σ = 59904768. Its totient is φ = 9963000.

The previous prime is 29920669. The next prime is 29920691. The reversal of 29920686 is 68602992.

It is a congruent number.

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, 5361 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (3744048).

Almost surely, 2^29920686 is an apocalyptic number.

29920686 is an abundant number, since it is smaller than the sum of its proper divisors (29984082).

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

29920686 is a wasteful number, since it uses less digits than its factorization.

29920686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 29920686 is about 5469.9804387219. The cubic root of 29920686 is about 310.4491788797.

The spelling of 29920686 in words is "twenty-nine million, nine hundred twenty thousand, six hundred eighty-six".