285729275820 has 96 divisors (see below), whose sum is σ = 869998062528. Its totient is φ = 69774262272.

The previous prime is 285729275791. The next prime is 285729275861. The reversal of 285729275820 is 28572927582.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3747757 + ... + 3823236.

It is an arithmetic number, because the mean of its divisors is an integer number (9062479818).

Almost surely, 2^285729275820 is an apocalyptic number.

285729275820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285729275820 is an abundant number, since it is smaller than the sum of its proper divisors (584268786708).

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

285729275820 is a wasteful number, since it uses less digits than its factorization.

285729275820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571059 (or 7571057 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 285729275820 in words is "two hundred eighty-five billion, seven hundred twenty-nine million, two hundred seventy-five thousand, eight hundred twenty".