2785800000 has 168 divisors, whose sum is σ = 9214847712. Its totient is φ = 742720000.

The previous prime is 2785799987. The next prime is 2785800067. The reversal of 2785800000 is 85872.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597679 + ... + 602321.

It is an arithmetic number, because the mean of its divisors is an integer number (54850284).

Almost surely, 2^2785800000 is an apocalyptic number.

2785800000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2785800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4607423856).

2785800000 is an abundant number, since it is smaller than the sum of its proper divisors (6429047712).

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

2785800000 is an frugal number, since it uses more digits than its factorization.

2785800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683 (or 4653 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 2785800000 is about 52780.6782828717. The cubic root of 2785800000 is about 1407.0730490566.

Adding to 2785800000 its reverse (85872), we get a palindrome (2785885872).

The spelling of 2785800000 in words is "two billion, seven hundred eighty-five million, eight hundred thousand".