2222840 has 32 divisors (see below), whose sum is σ = 5088960. Its totient is φ = 873600.

The previous prime is 2222839. The next prime is 2222893. The reversal of 2222840 is 482222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1985 + ... + 2895.

It is an arithmetic number, because the mean of its divisors is an integer number (159030).

2^2222840 is an apocalyptic number.

2222840 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 2222840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544480).

2222840 is an abundant number, since it is smaller than the sum of its proper divisors (2866120).

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

2222840 is a wasteful number, since it uses less digits than its factorization.

2222840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2222840 is about 1490.9191795668. The cubic root of 2222840 is about 130.5076795097.

The spelling of 2222840 in words is "two million, two hundred twenty-two thousand, eight hundred forty".