28288786727 has 8 divisors (see below), whose sum is σ = 29524623360. Its totient is φ = 27053440920.

The previous prime is 28288786667. The next prime is 28288786739. The reversal of 28288786727 is 72768788282.

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

It is a cyclic number.

It is not a de Polignac number, because 28288786727 - 2²⁶ = 28221677863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28288780727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2399 + ... + 237872.

It is an arithmetic number, because the mean of its divisors is an integer number (3690577920).

Almost surely, 2^28288786727 is an apocalyptic number.

28288786727 is a deficient number, since it is larger than the sum of its proper divisors (1235836633).

28288786727 is a wasteful number, since it uses less digits than its factorization.

28288786727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245413.

The product of its digits is 67436544, while the sum is 65.

The spelling of 28288786727 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred eighty-six thousand, seven hundred twenty-seven".