28222242 has 16 divisors (see below), whose sum is σ = 58898880. Its totient is φ = 8998352.

The previous prime is 28222223. The next prime is 28222253. The reversal of 28222242 is 24222282.

It is a super-3 number, since 3×28222242³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102117 + ... + 102392.

It is an arithmetic number, because the mean of its divisors is an integer number (3681180).

Almost surely, 2^28222242 is an apocalyptic number.

28222242 is an abundant number, since it is smaller than the sum of its proper divisors (30676638).

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

28222242 is a wasteful number, since it uses less digits than its factorization.

28222242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204537.

The product of its digits is 2048, while the sum is 24.

The square root of 28222242 is about 5312.4610116216. The cubic root of 28222242 is about 304.4601828324.

The spelling of 28222242 in words is "twenty-eight million, two hundred twenty-two thousand, two hundred forty-two".