28280822 has 4 divisors (see below), whose sum is σ = 42421236. Its totient is φ = 14140410.

The previous prime is 28280803. The next prime is 28280831. The reversal of 28280822 is 22808282.

It is a happy number.

28280822 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7070204 + ... + 7070207.

It is an arithmetic number, because the mean of its divisors is an integer number (10605309).

Almost surely, 2^28280822 is an apocalyptic number.

28280822 is a deficient number, since it is larger than the sum of its proper divisors (14140414).

28280822 is a wasteful number, since it uses less digits than its factorization.

28280822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14140413.

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 28280822 is about 5317.9716057911. The cubic root of 28280822 is about 304.6706899882.

The spelling of 28280822 in words is "twenty-eight million, two hundred eighty thousand, eight hundred twenty-two".