2378213 has 4 divisors (see below), whose sum is σ = 2381580. Its totient is φ = 2374848.

The previous prime is 2378197. The next prime is 2378219. The reversal of 2378213 is 3128732.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 574564 + 1803649 = 758^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 2378213 - 2⁴ = 2378197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378219) 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, 170 + ... + 2187.

It is an arithmetic number, because the mean of its divisors is an integer number (595395).

2^2378213 is an apocalyptic number.

It is an amenable number.

2378213 is a deficient number, since it is larger than the sum of its proper divisors (3367).

2378213 is a wasteful number, since it uses less digits than its factorization.

2378213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366.

The product of its digits is 2016, while the sum is 26.

The square root of 2378213 is about 1542.1455832703. The cubic root of 2378213 is about 133.4802207601.

The spelling of 2378213 in words is "two million, three hundred seventy-eight thousand, two hundred thirteen".