2138324 has 6 divisors (see below), whose sum is σ = 3742074. Its totient is φ = 1069160.

The previous prime is 2138321. The next prime is 2138327. The reversal of 2138324 is 4238312.

It is an interprime number because it is at equal distance from previous prime (2138321) and next prime (2138327).

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 6724 = 1460^2 + 82^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2138324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138321) 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, 267287 + ... + 267294.

It is an arithmetic number, because the mean of its divisors is an integer number (623679).

2^2138324 is an apocalyptic number.

It is an amenable number.

2138324 is a deficient number, since it is larger than the sum of its proper divisors (1603750).

2138324 is a wasteful number, since it uses less digits than its factorization.

2138324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534585 (or 534583 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 2138324 is about 1462.3009266222. The cubic root of 2138324 is about 128.8322238472.

The spelling of 2138324 in words is "two million, one hundred thirty-eight thousand, three hundred twenty-four".