29920844 has 12 divisors (see below), whose sum is σ = 52626000. Its totient is φ = 14884848.

The previous prime is 29920841. The next prime is 29920853. The reversal of 29920844 is 44802992.

It is a junction number, because it is equal to n+sod(n) for n = 29920798 and 29920807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29920841) 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 3 ways as a sum of consecutive naturals, for example, 17999 + ... + 19590.

It is an arithmetic number, because the mean of its divisors is an integer number (4385500).

Almost surely, 2^29920844 is an apocalyptic number.

It is an amenable number.

29920844 is a deficient number, since it is larger than the sum of its proper divisors (22705156).

29920844 is a wasteful number, since it uses less digits than its factorization.

29920844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37792 (or 37790 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 29920844 is about 5469.9948811676. The cubic root of 29920844 is about 310.4497253343.

The spelling of 29920844 in words is "twenty-nine million, nine hundred twenty thousand, eight hundred forty-four".