285748885720 has 16 divisors (see below), whose sum is σ = 642934992960. Its totient is φ = 114299554272.

The previous prime is 285748885657. The next prime is 285748885739. The reversal of 285748885720 is 27588847582.

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, 3571861032 + ... + 3571861111.

It is an arithmetic number, because the mean of its divisors is an integer number (40183437060).

Almost surely, 2^285748885720 is an apocalyptic number.

285748885720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285748885720 is an abundant number, since it is smaller than the sum of its proper divisors (357186107240).

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

285748885720 is a wasteful number, since it uses less digits than its factorization.

285748885720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143722154 (or 7143722150 counting only the distinct ones).

The product of its (nonzero) digits is 80281600, while the sum is 64.

The spelling of 285748885720 in words is "two hundred eighty-five billion, seven hundred forty-eight million, eight hundred eighty-five thousand, seven hundred twenty".