28941222 has 16 divisors (see below), whose sum is σ = 60399360. Its totient is φ = 9227592.

The previous prime is 28941181. The next prime is 28941229. The reversal of 28941222 is 22214982.

It is a self number, because there is not a number n which added to its sum of digits gives 28941222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28941229) 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, 104722 + ... + 104997.

It is an arithmetic number, because the mean of its divisors is an integer number (3774960).

Almost surely, 2^28941222 is an apocalyptic number.

28941222 is an abundant number, since it is smaller than the sum of its proper divisors (31458138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28941222 is a wasteful number, since it uses less digits than its factorization.

28941222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209747.

The product of its digits is 4608, while the sum is 30.

The square root of 28941222 is about 5379.7046387325. The cubic root of 28941222 is about 307.0239736254.

The spelling of 28941222 in words is "twenty-eight million, nine hundred forty-one thousand, two hundred twenty-two".