28222408 has 16 divisors (see below), whose sum is σ = 52974000. Its totient is φ = 14096016.

The previous prime is 28222399. The next prime is 28222409. The reversal of 28222408 is 80422282.

It is not an unprimeable number, because it can be changed into a prime (28222409) 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, 11863 + ... + 14041.

It is an arithmetic number, because the mean of its divisors is an integer number (3310875).

Almost surely, 2^28222408 is an apocalyptic number.

It is an amenable number.

28222408 is a deficient number, since it is larger than the sum of its proper divisors (24751592).

28222408 is a wasteful number, since it uses less digits than its factorization.

28222408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804 (or 3800 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 28222408 is about 5312.4766352427. The cubic root of 28222408 is about 304.4607797645.

The spelling of 28222408 in words is "twenty-eight million, two hundred twenty-two thousand, four hundred eight".