2806220 has 24 divisors (see below), whose sum is σ = 5931744. Its totient is φ = 1115136.

The previous prime is 2806211. The next prime is 2806231. The reversal of 2806220 is 226082.

2806220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2806192 and 2806201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3497 + ... + 4223.

It is an arithmetic number, because the mean of its divisors is an integer number (247156).

2^2806220 is an apocalyptic number.

2806220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2806220 is an abundant number, since it is smaller than the sum of its proper divisors (3125524).

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

2806220 is a wasteful number, since it uses less digits than its factorization.

2806220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2806220 is about 1675.1776025246. The cubic root of 2806220 is about 141.0502645935.

It can be divided in two parts, 28062 and 20, that added together give a palindrome (28082).

The spelling of 2806220 in words is "two million, eight hundred six thousand, two hundred twenty".