2222288 has 10 divisors (see below), whose sum is σ = 4305714. Its totient is φ = 1111136.

The previous prime is 2222287. The next prime is 2222293. The reversal of 2222288 is 8822222.

It can be written as a sum of positive squares in only one way, i.e., 1827904 + 394384 = 1352^2 + 628^2 .

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

It is an Ulam number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69431 + ... + 69462.

2^2222288 is an apocalyptic number.

It is an amenable number.

2222288 is a deficient number, since it is larger than the sum of its proper divisors (2083426).

2222288 is a wasteful number, since it uses less digits than its factorization.

2222288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138901 (or 138895 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The square root of 2222288 is about 1490.7340473740. The cubic root of 2222288 is about 130.4968755827.

It can be divided in two parts, 2222 and 288, that multiplied together give a palindrome (639936).

The spelling of 2222288 in words is "two million, two hundred twenty-two thousand, two hundred eighty-eight".