28788086 has 8 divisors (see below), whose sum is σ = 43790544. Its totient is φ = 14191240.

The previous prime is 28788079. The next prime is 28788101. The reversal of 28788086 is 68088782.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28788086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101225 + ... + 101508.

It is an arithmetic number, because the mean of its divisors is an integer number (5473818).

Almost surely, 2^28788086 is an apocalyptic number.

28788086 is a deficient number, since it is larger than the sum of its proper divisors (15002458).

28788086 is a wasteful number, since it uses less digits than its factorization.

28788086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202806.

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 28788086 is about 5365.4530097653. The cubic root of 28788086 is about 306.4814994861.

The spelling of 28788086 in words is "twenty-eight million, seven hundred eighty-eight thousand, eighty-six".