28295222 has 8 divisors (see below), whose sum is σ = 43346016. Its totient is φ = 13846552.

The previous prime is 28295177. The next prime is 28295227. The reversal of 28295222 is 22259282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28295227) 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, 150413 + ... + 150600.

It is an arithmetic number, because the mean of its divisors is an integer number (5418252).

Almost surely, 2^28295222 is an apocalyptic number.

28295222 is a deficient number, since it is larger than the sum of its proper divisors (15050794).

28295222 is a wasteful number, since it uses less digits than its factorization.

28295222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301062.

The product of its digits is 11520, while the sum is 32.

The square root of 28295222 is about 5319.3253331602. The cubic root of 28295222 is about 304.7223918507.

The spelling of 28295222 in words is "twenty-eight million, two hundred ninety-five thousand, two hundred twenty-two".