2812220 has 12 divisors (see below), whose sum is σ = 5905704. Its totient is φ = 1124880.

The previous prime is 2812219. The next prime is 2812223. The reversal of 2812220 is 222182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2812223) 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, 70286 + ... + 70325.

It is an arithmetic number, because the mean of its divisors is an integer number (492142).

2^2812220 is an apocalyptic number.

2812220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2812220 is an abundant number, since it is smaller than the sum of its proper divisors (3093484).

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

2812220 is a wasteful number, since it uses less digits than its factorization.

2812220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140620 (or 140618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2812220 is about 1676.9675011759. The cubic root of 2812220 is about 141.1507199085.

The spelling of 2812220 in words is "two million, eight hundred twelve thousand, two hundred twenty".