2266820 has 12 divisors (see below), whose sum is σ = 4760364. Its totient is φ = 906720.

The previous prime is 2266801. The next prime is 2266829. The reversal of 2266820 is 286622.

It can be written as a sum of positive squares in 2 ways, for example, as 669124 + 1597696 = 818^2 + 1264^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2266820.

It is not an unprimeable number, because it can be changed into a prime (2266829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56651 + ... + 56690.

It is an arithmetic number, because the mean of its divisors is an integer number (396697).

2^2266820 is an apocalyptic number.

2266820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2266820 is an abundant number, since it is smaller than the sum of its proper divisors (2493544).

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

2266820 is a wasteful number, since it uses less digits than its factorization.

2266820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113350 (or 113348 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2266820 is about 1505.5962274129. The cubic root of 2266820 is about 131.3627843858.

The spelling of 2266820 in words is "two million, two hundred sixty-six thousand, eight hundred twenty".