28948906 has 24 divisors (see below), whose sum is σ = 51135840. Its totient is φ = 12253752.

The previous prime is 28948883. The next prime is 28948921. The reversal of 28948906 is 60984982.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6355 + ... + 9913.

It is an arithmetic number, because the mean of its divisors is an integer number (2130660).

Almost surely, 2^28948906 is an apocalyptic number.

28948906 is a deficient number, since it is larger than the sum of its proper divisors (22186934).

28948906 is a wasteful number, since it uses less digits than its factorization.

28948906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658 (or 3651 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 28948906 is about 5380.4187569370. The cubic root of 28948906 is about 307.0511432159.

The spelling of 28948906 in words is "twenty-eight million, nine hundred forty-eight thousand, nine hundred six".