28443308 has 12 divisors (see below), whose sum is σ = 49845600. Its totient is φ = 14201712.

The previous prime is 28443307. The next prime is 28443313. The reversal of 28443308 is 80334482.

It is not an unprimeable number, because it can be changed into a prime (28443307) 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, 1508 + ... + 7691.

It is an arithmetic number, because the mean of its divisors is an integer number (4153800).

Almost surely, 2^28443308 is an apocalyptic number.

It is an amenable number.

28443308 is a deficient number, since it is larger than the sum of its proper divisors (21402292).

28443308 is a wasteful number, since it uses less digits than its factorization.

28443308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9976 (or 9974 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 28443308 is about 5333.2267906025. The cubic root of 28443308 is about 305.2530659680.

The spelling of 28443308 in words is "twenty-eight million, four hundred forty-three thousand, three hundred eight".