2276820 has 144 divisors (see below), whose sum is σ = 8561280. Its totient is φ = 476928.

The previous prime is 2276809. The next prime is 2276849. The reversal of 2276820 is 286722.

2276820 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

2276820 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16311 + ... + 16449.

2^2276820 is an apocalyptic number.

2276820 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 2276820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4280640).

2276820 is an abundant number, since it is smaller than the sum of its proper divisors (6284460).

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

2276820 is a wasteful number, since it uses less digits than its factorization.

2276820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2276820 is about 1508.9135164084. The cubic root of 2276820 is about 131.5556685274. Note that the first 3 decimals are identical.

The spelling of 2276820 in words is "two million, two hundred seventy-six thousand, eight hundred twenty".