28571068812 has 48 divisors (see below), whose sum is σ = 78320696832. Its totient is φ = 7991906880.

The previous prime is 28571068789. The next prime is 28571068831. The reversal of 28571068812 is 21886017582.

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, 8323188 + ... + 8326619.

It is an arithmetic number, because the mean of its divisors is an integer number (1631681184).

Almost surely, 2^28571068812 is an apocalyptic number.

28571068812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28571068812 is an abundant number, since it is smaller than the sum of its proper divisors (49749628020).

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

28571068812 is a wasteful number, since it uses less digits than its factorization.

28571068812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16649838 (or 16649836 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 48.

The spelling of 28571068812 in words is "twenty-eight billion, five hundred seventy-one million, sixty-eight thousand, eight hundred twelve".