2227820 has 24 divisors (see below), whose sum is σ = 5347104. Its totient is φ = 763776.

The previous prime is 2227801. The next prime is 2227831. The reversal of 2227820 is 287222.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7817 + ... + 8096.

It is an arithmetic number, because the mean of its divisors is an integer number (222796).

2^2227820 is an apocalyptic number.

2227820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2227820 is an abundant number, since it is smaller than the sum of its proper divisors (3119284).

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

2227820 is a wasteful number, since it uses less digits than its factorization.

2227820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15929 (or 15927 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2227820 is about 1492.5883558436. The cubic root of 2227820 is about 130.6050689583.

The spelling of 2227820 in words is "two million, two hundred twenty-seven thousand, eight hundred twenty".