2238641 has 4 divisors (see below), whose sum is σ = 2293284. Its totient is φ = 2184000.

The previous prime is 2238631. The next prime is 2238647. The reversal of 2238641 is 1468322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92416 + 2146225 = 304^2 + 1465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238641 - 2¹⁰ = 2237617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2238641.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238647) 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, 27260 + ... + 27341.

It is an arithmetic number, because the mean of its divisors is an integer number (573321).

2^2238641 is an apocalyptic number.

It is an amenable number.

2238641 is a deficient number, since it is larger than the sum of its proper divisors (54643).

2238641 is an equidigital number, since it uses as much as digits as its factorization.

2238641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54642.

The product of its digits is 2304, while the sum is 26.

The square root of 2238641 is about 1496.2088757924. The cubic root of 2238641 is about 130.8161864646.

The spelling of 2238641 in words is "two million, two hundred thirty-eight thousand, six hundred forty-one".