2785335820 has 24 divisors (see below), whose sum is σ = 5991870528. Its totient is φ = 1086960000.

The previous prime is 2785335797. The next prime is 2785335863. The reversal of 2785335820 is 285335872.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697556 + ... + 1699195.

It is an arithmetic number, because the mean of its divisors is an integer number (249661272).

Almost surely, 2^2785335820 is an apocalyptic number.

2785335820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785335820 is an abundant number, since it is smaller than the sum of its proper divisors (3206534708).

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

2785335820 is a wasteful number, since it uses less digits than its factorization.

2785335820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396801 (or 3396799 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 2785335820 is about 52776.2808466076. The cubic root of 2785335820 is about 1406.9948941942.

The spelling of 2785335820 in words is "two billion, seven hundred eighty-five million, three hundred thirty-five thousand, eight hundred twenty".