29805428 has 12 divisors (see below), whose sum is σ = 52204992. Its totient is φ = 14889720.

The previous prime is 29805421. The next prime is 29805439. The reversal of 29805428 is 82450892.

It is a junction number, because it is equal to n+sod(n) for n = 29805391 and 29805400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29805421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3443 + ... + 8453.

It is an arithmetic number, because the mean of its divisors is an integer number (4350416).

Almost surely, 2^29805428 is an apocalyptic number.

It is an amenable number.

29805428 is a deficient number, since it is larger than the sum of its proper divisors (22399564).

29805428 is a wasteful number, since it uses less digits than its factorization.

29805428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6502 (or 6500 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 29805428 is about 5459.4347692779. The cubic root of 29805428 is about 310.0500370150.

The spelling of 29805428 in words is "twenty-nine million, eight hundred five thousand, four hundred twenty-eight".