28222894 has 8 divisors (see below), whose sum is σ = 48382128. Its totient is φ = 12095520.

The previous prime is 28222891. The next prime is 28222903. The reversal of 28222894 is 49822282.

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 (28222891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1007947 + ... + 1007974.

It is an arithmetic number, because the mean of its divisors is an integer number (6047766).

Almost surely, 2^28222894 is an apocalyptic number.

28222894 is a deficient number, since it is larger than the sum of its proper divisors (20159234).

28222894 is a wasteful number, since it uses less digits than its factorization.

28222894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015930.

The product of its digits is 36864, while the sum is 37.

The square root of 28222894 is about 5312.5223764235. The cubic root of 28222894 is about 304.4625273958.

The spelling of 28222894 in words is "twenty-eight million, two hundred twenty-two thousand, eight hundred ninety-four".