28199822 has 16 divisors (see below), whose sum is σ = 48425472. Its totient is φ = 12064920.

The previous prime is 28199807. The next prime is 28199833. The reversal of 28199822 is 22899182.

It is a self number, because there is not a number n which added to its sum of digits gives 28199822.

It is a congruent number.

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, 9047 + ... + 11757.

It is an arithmetic number, because the mean of its divisors is an integer number (3026592).

Almost surely, 2^28199822 is an apocalyptic number.

28199822 is a deficient number, since it is larger than the sum of its proper divisors (20225650).

28199822 is a wasteful number, since it uses less digits than its factorization.

28199822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463.

The product of its digits is 41472, while the sum is 41.

The square root of 28199822 is about 5310.3504592447. The cubic root of 28199822 is about 304.3795395152.

The spelling of 28199822 in words is "twenty-eight million, one hundred ninety-nine thousand, eight hundred twenty-two".