28288770306 has 32 divisors (see below), whose sum is σ = 56764942080. Its totient is φ = 9398388096.

The previous prime is 28288770281. The next prime is 28288770311. The reversal of 28288770306 is 60307788282.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5760180 + ... + 5765088.

It is an arithmetic number, because the mean of its divisors is an integer number (1773904440).

Almost surely, 2^28288770306 is an apocalyptic number.

28288770306 is an abundant number, since it is smaller than the sum of its proper divisors (28476171774).

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

28288770306 is a wasteful number, since it uses less digits than its factorization.

28288770306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7898.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 28288770306 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred seventy thousand, three hundred six".