28508108 has 6 divisors (see below), whose sum is σ = 49889196. Its totient is φ = 14254052.

The previous prime is 28508107. The next prime is 28508141. The reversal of 28508108 is 80180582.

It is not an unprimeable number, because it can be changed into a prime (28508101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3563510 + ... + 3563517.

It is an arithmetic number, because the mean of its divisors is an integer number (8314866).

Almost surely, 2^28508108 is an apocalyptic number.

It is an amenable number.

28508108 is a deficient number, since it is larger than the sum of its proper divisors (21381088).

28508108 is a wasteful number, since it uses less digits than its factorization.

28508108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7127031 (or 7127029 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 28508108 is about 5339.2984557899. The cubic root of 28508108 is about 305.4847009606.

The spelling of 28508108 in words is "twenty-eight million, five hundred eight thousand, one hundred eight".