2855720 has 96 divisors (see below), whose sum is σ = 7879680. Its totient is φ = 927360.

The previous prime is 2855707. The next prime is 2855729. The reversal of 2855720 is 275582.

2855720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2855729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60737 + ... + 60783.

It is an arithmetic number, because the mean of its divisors is an integer number (82080).

2^2855720 is an apocalyptic number.

2855720 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 2855720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3939840).

2855720 is an abundant number, since it is smaller than the sum of its proper divisors (5023960).

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

2855720 is a wasteful number, since it uses less digits than its factorization.

2855720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2855720 is about 1689.8875702247. The cubic root of 2855720 is about 141.8747821612.

The spelling of 2855720 in words is "two million, eight hundred fifty-five thousand, seven hundred twenty".