28222108 has 12 divisors (see below), whose sum is σ = 52294032. Its totient is φ = 13280960.

The previous prime is 28222093. The next prime is 28222109. The reversal of 28222108 is 80122282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28222109) by changing a digit.

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, 207448 + ... + 207583.

It is an arithmetic number, because the mean of its divisors is an integer number (4357836).

Almost surely, 2^28222108 is an apocalyptic number.

It is an amenable number.

28222108 is a deficient number, since it is larger than the sum of its proper divisors (24071924).

28222108 is a wasteful number, since it uses less digits than its factorization.

28222108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415052 (or 415050 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 28222108 is about 5312.4483997494. The cubic root of 28222108 is about 304.4597009698.

The spelling of 28222108 in words is "twenty-eight million, two hundred twenty-two thousand, one hundred eight".