28222106 has 32 divisors (see below), whose sum is σ = 49144320. Its totient is φ = 12020400.

The previous prime is 28222093. The next prime is 28222109. The reversal of 28222106 is 60122282.

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 15 ways as a sum of consecutive naturals, for example, 44411 + ... + 45041.

It is an arithmetic number, because the mean of its divisors is an integer number (1535760).

Almost surely, 2^28222106 is an apocalyptic number.

28222106 is a deficient number, since it is larger than the sum of its proper divisors (20922214).

28222106 is a wasteful number, since it uses less digits than its factorization.

28222106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 28222106 is about 5312.4482115123. The cubic root of 28222106 is about 304.4596937778.

Adding to 28222106 its reverse (60122282), we get a palindrome (88344388).

The spelling of 28222106 in words is "twenty-eight million, two hundred twenty-two thousand, one hundred six".