28421108 has 24 divisors (see below), whose sum is σ = 51145248. Its totient is φ = 13811616.

The previous prime is 28421101. The next prime is 28421117. The reversal of 28421108 is 80112482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28421101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63935 + ... + 64377.

It is an arithmetic number, because the mean of its divisors is an integer number (2131052).

Almost surely, 2^28421108 is an apocalyptic number.

It is an amenable number.

28421108 is a deficient number, since it is larger than the sum of its proper divisors (22724140).

28421108 is a wasteful number, since it uses less digits than its factorization.

28421108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 28421108 is about 5331.1450927545. The cubic root of 28421108 is about 305.1736286316.

The spelling of 28421108 in words is "twenty-eight million, four hundred twenty-one thousand, one hundred eight".