2785900 has 36 divisors (see below), whose sum is σ = 6513472. Its totient is φ = 1028160.

The previous prime is 2785891. The next prime is 2785901. The reversal of 2785900 is 95872.

It is a super-2 number, since 2×2785900² = 15522477620000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2785901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229 + ... + 2371.

2^2785900 is an apocalyptic number.

2785900 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 2785900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3256736).

2785900 is an abundant number, since it is smaller than the sum of its proper divisors (3727572).

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

2785900 is a wasteful number, since it uses less digits than its factorization.

2785900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2785900 is about 1669.1015547294. The cubic root of 2785900 is about 140.7089885109.

The spelling of 2785900 in words is "two million, seven hundred eighty-five thousand, nine hundred".