28788726 has 8 divisors (see below), whose sum is σ = 57577464. Its totient is φ = 9596240.

The previous prime is 28788719. The next prime is 28788763. The reversal of 28788726 is 62788782.

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

28788726 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2399055 + ... + 2399066.

It is an arithmetic number, because the mean of its divisors is an integer number (7197183).

Almost surely, 2^28788726 is an apocalyptic number.

28788726 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.

28788726 is a wasteful number, since it uses less digits than its factorization.

28788726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4798126.

The product of its digits is 602112, while the sum is 48.

The square root of 28788726 is about 5365.5126502507. The cubic root of 28788726 is about 306.4837706421.

The spelling of 28788726 in words is "twenty-eight million, seven hundred eighty-eight thousand, seven hundred twenty-six".