28656822 has 8 divisors (see below), whose sum is σ = 57313656. Its totient is φ = 9552272.

The previous prime is 28656811. The next prime is 28656841. The reversal of 28656822 is 22865682.

It is a sphenic number, since it is the product of 3 distinct primes.

28656822 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 2388063 + ... + 2388074.

It is an arithmetic number, because the mean of its divisors is an integer number (7164207).

Almost surely, 2^28656822 is an apocalyptic number.

28656822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28656822 is a wasteful number, since it uses less digits than its factorization.

28656822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4776142.

The product of its digits is 92160, while the sum is 39.

The square root of 28656822 is about 5353.2067025289. The cubic root of 28656822 is about 306.0149721411.

The spelling of 28656822 in words is "twenty-eight million, six hundred fifty-six thousand, eight hundred twenty-two".