2188868 has 12 divisors (see below), whose sum is σ = 4178832. Its totient is φ = 994920.

The previous prime is 2188861. The next prime is 2188871. The reversal of 2188868 is 8688812.

It is a super-2 number, since 2×2188868² = 9582286242848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2188861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24830 + ... + 24917.

It is an arithmetic number, because the mean of its divisors is an integer number (348236).

2^2188868 is an apocalyptic number.

It is an amenable number.

2188868 is a deficient number, since it is larger than the sum of its proper divisors (1989964).

2188868 is a wasteful number, since it uses less digits than its factorization.

2188868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49762 (or 49760 counting only the distinct ones).

The product of its digits is 49152, while the sum is 41.

The square root of 2188868 is about 1479.4823419021. The cubic root of 2188868 is about 129.8394072194.

The spelling of 2188868 in words is "two million, one hundred eighty-eight thousand, eight hundred sixty-eight".