2187316 has 12 divisors (see below), whose sum is σ = 3845380. Its totient is φ = 1088640.

The previous prime is 2187301. The next prime is 2187319. The reversal of 2187316 is 6137812.

It can be written as a sum of positive squares in 2 ways, for example, as 756900 + 1430416 = 870^2 + 1196^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187319) 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 in 3 ways as a sum of consecutive naturals, for example, 171 + ... + 2098.

2^2187316 is an apocalyptic number.

It is an amenable number.

2187316 is a deficient number, since it is larger than the sum of its proper divisors (1658064).

2187316 is a wasteful number, since it uses less digits than its factorization.

2187316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514 (or 2512 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 2187316 is about 1478.9577411137. The cubic root of 2187316 is about 129.8087127531.

The spelling of 2187316 in words is "two million, one hundred eighty-seven thousand, three hundred sixteen".