28844222 has 12 divisors (see below), whose sum is σ = 47557608. Its totient is φ = 13110900.

The previous prime is 28844219. The next prime is 28844251. The reversal of 28844222 is 22244882.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59354 + ... + 59837.

It is an arithmetic number, because the mean of its divisors is an integer number (3963134).

Almost surely, 2^28844222 is an apocalyptic number.

28844222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28844222 is a deficient number, since it is larger than the sum of its proper divisors (18713386).

28844222 is a wasteful number, since it uses less digits than its factorization.

28844222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119215 (or 119204 counting only the distinct ones).

The product of its digits is 16384, while the sum is 32.

The square root of 28844222 is about 5370.6817071951. The cubic root of 28844222 is about 306.6805803916.

The spelling of 28844222 in words is "twenty-eight million, eight hundred forty-four thousand, two hundred twenty-two".