2785820000 has 60 divisors (see below), whose sum is σ = 6853584276. Its totient is φ = 1114320000.

The previous prime is 2785819987. The next prime is 2785820003. The reversal of 2785820000 is 285872.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2785820003) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 49646 + ... + 89645.

Almost surely, 2^2785820000 is an apocalyptic number.

2785820000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785820000 is an abundant number, since it is smaller than the sum of its proper divisors (4067764276).

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

2785820000 is an equidigital number, since it uses as much as digits as its factorization.

2785820000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139321 (or 139298 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2785820000 is about 52780.8677458035. The cubic root of 2785820000 is about 1407.0764162993.

The spelling of 2785820000 in words is "two billion, seven hundred eighty-five million, eight hundred twenty thousand".