2187238 has 16 divisors (see below), whose sum is σ = 3476880. Its totient is φ = 1030176.

The previous prime is 2187233. The next prime is 2187247. The reversal of 2187238 is 8327812.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056 + ... + 2932.

It is an arithmetic number, because the mean of its divisors is an integer number (217305).

2^2187238 is an apocalyptic number.

2187238 is a deficient number, since it is larger than the sum of its proper divisors (1289642).

2187238 is a wasteful number, since it uses less digits than its factorization.

2187238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 5376, while the sum is 31.

The square root of 2187238 is about 1478.9313709567. The cubic root of 2187238 is about 129.8071697357.

The spelling of 2187238 in words is "two million, one hundred eighty-seven thousand, two hundred thirty-eight".