2226820 has 12 divisors (see below), whose sum is σ = 4676364. Its totient is φ = 890720.

The previous prime is 2226817. The next prime is 2226839. The reversal of 2226820 is 286222.

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 1915456 = 558^2 + 1384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2226791 and 2226800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55651 + ... + 55690.

It is an arithmetic number, because the mean of its divisors is an integer number (389697).

2^2226820 is an apocalyptic number.

2226820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2226820 is an abundant number, since it is smaller than the sum of its proper divisors (2449544).

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

2226820 is a wasteful number, since it uses less digits than its factorization.

2226820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111350 (or 111348 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2226820 is about 1492.2533296998. The cubic root of 2226820 is about 130.5855244985.

The spelling of 2226820 in words is "two million, two hundred twenty-six thousand, eight hundred twenty".