2188288 has 22 divisors (see below), whose sum is σ = 4376486. Its totient is φ = 1093632.

The previous prime is 2188283. The next prime is 2188297. The reversal of 2188288 is 8828812.

It can be written as a sum of positive squares in only one way, i.e., 1327104 + 861184 = 1152^2 + 928^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2188283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45 + ... + 2092.

2^2188288 is an apocalyptic number.

It is an amenable number.

2188288 is a deficient number, since it is larger than the sum of its proper divisors (2188198).

2188288 is an equidigital number, since it uses as much as digits as its factorization.

2188288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157 (or 2139 counting only the distinct ones).

The product of its digits is 16384, while the sum is 37.

The square root of 2188288 is about 1479.2863144098. The cubic root of 2188288 is about 129.8279380478.

The spelling of 2188288 in words is "two million, one hundred eighty-eight thousand, two hundred eighty-eight".