285728887300 has 36 divisors (see below), whose sum is σ = 646989590016. Its totient is φ = 109322356000.

The previous prime is 285728887289. The next prime is 285728887349. The reversal of 285728887300 is 3788827582.

It is a super-2 number, since 2×285728887300² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62112676 + ... + 62117275.

It is an arithmetic number, because the mean of its divisors is an integer number (17971933056).

Almost surely, 2^285728887300 is an apocalyptic number.

285728887300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285728887300 is an abundant number, since it is smaller than the sum of its proper divisors (361260702716).

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

285728887300 is a wasteful number, since it uses less digits than its factorization.

285728887300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124229988 (or 124229981 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 58.

The spelling of 285728887300 in words is "two hundred eighty-five billion, seven hundred twenty-eight million, eight hundred eighty-seven thousand, three hundred".