2188672 has 16 divisors (see below), whose sum is σ = 4360500. Its totient is φ = 1094272.

The previous prime is 2188663. The next prime is 2188673. The reversal of 2188672 is 2768812.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8422 + ... + 8677.

2^2188672 is an apocalyptic number.

It is an amenable number.

2188672 is a deficient number, since it is larger than the sum of its proper divisors (2171828).

2188672 is an equidigital number, since it uses as much as digits as its factorization.

2188672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17113 (or 17101 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 2188672 is about 1479.4161010345. The cubic root of 2188672 is about 129.8355316571.

It can be divided in two parts, 218867 and 2, that multiplied together give a palindrome (437734).

The spelling of 2188672 in words is "two million, one hundred eighty-eight thousand, six hundred seventy-two".