2855000 has 40 divisors (see below), whose sum is σ = 6700980. Its totient is φ = 1140000.

The previous prime is 2854993. The next prime is 2855003. The reversal of 2855000 is 5582.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (20) 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 (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2855003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4715 + ... + 5285.

2^2855000 is an apocalyptic number.

2855000 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 2855000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3350490).

2855000 is an abundant number, since it is smaller than the sum of its proper divisors (3845980).

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

2855000 is an equidigital number, since it uses as much as digits as its factorization.

2855000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2855000 is about 1689.6745248716. The cubic root of 2855000 is about 141.8628577394.

The spelling of 2855000 in words is "two million, eight hundred fifty-five thousand".