28288511178 has 16 divisors (see below), whose sum is σ = 56666692416. Its totient is φ = 9414558720.

The previous prime is 28288511161. The next prime is 28288511183. The reversal of 28288511178 is 87111588282.

It is a self number, because there is not a number n which added to its sum of digits gives 28288511178.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3732151 + ... + 3739722.

It is an arithmetic number, because the mean of its divisors is an integer number (3541668276).

Almost surely, 2^28288511178 is an apocalyptic number.

28288511178 is an abundant number, since it is smaller than the sum of its proper divisors (28378181238).

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

28288511178 is a wasteful number, since it uses less digits than its factorization.

28288511178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472509.

The product of its digits is 573440, while the sum is 51.

The spelling of 28288511178 in words is "twenty-eight billion, two hundred eighty-eight million, five hundred eleven thousand, one hundred seventy-eight".