2222688 has 72 divisors (see below), whose sum is σ = 6364008. Its totient is φ = 678912.

The previous prime is 2222687. The next prime is 2222719. The reversal of 2222688 is 8862222.

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁰ + 2¹³ + 2¹⁶ + 6⁶ + 8⁴ + 8⁷ .

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16156 + ... + 16292.

It is an arithmetic number, because the mean of its divisors is an integer number (88389).

2^2222688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3182004).

2222688 is an abundant number, since it is smaller than the sum of its proper divisors (4141320).

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

2222688 is a wasteful number, since it uses less digits than its factorization.

2222688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 155 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 2222688 is about 1490.8682034305. The cubic root of 2222688 is about 130.5047046938.

The spelling of 2222688 in words is "two million, two hundred twenty-two thousand, six hundred eighty-eight".