28938338 has 16 divisors (see below), whose sum is σ = 50996736. Its totient is φ = 12141840.

The previous prime is 28938313. The next prime is 28938383. The reversal of 28938338 is 83383982.

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 in 7 ways as a sum of consecutive naturals, for example, 50306 + ... + 50877.

It is an arithmetic number, because the mean of its divisors is an integer number (3187296).

Almost surely, 2^28938338 is an apocalyptic number.

28938338 is a deficient number, since it is larger than the sum of its proper divisors (22058398).

28938338 is a wasteful number, since it uses less digits than its factorization.

28938338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101209.

The product of its digits is 248832, while the sum is 44.

The square root of 28938338 is about 5379.4365875991. The cubic root of 28938338 is about 307.0137749481.

The spelling of 28938338 in words is "twenty-eight million, nine hundred thirty-eight thousand, three hundred thirty-eight".