28043308 has 12 divisors (see below), whose sum is σ = 49370832. Its totient is φ = 13937360.

The previous prime is 28043273. The next prime is 28043311. The reversal of 28043308 is 80334082.

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 3 ways as a sum of consecutive naturals, for example, 20323 + ... + 21658.

It is an arithmetic number, because the mean of its divisors is an integer number (4114236).

Almost surely, 2^28043308 is an apocalyptic number.

It is an amenable number.

28043308 is a deficient number, since it is larger than the sum of its proper divisors (21327524).

28043308 is a wasteful number, since it uses less digits than its factorization.

28043308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42152 (or 42150 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28043308 is about 5295.5932623267. The cubic root of 28043308 is about 303.8153743915.

The spelling of 28043308 in words is "twenty-eight million, forty-three thousand, three hundred eight".