2381378 has 8 divisors (see below), whose sum is σ = 3607740. Its totient is φ = 1178800.

The previous prime is 2381363. The next prime is 2381387. The reversal of 2381378 is 8731832.

It can be written as a sum of positive squares in 2 ways, for example, as 2380849 + 529 = 1543^2 + 23^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2381378² = 11341922357768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5693 + ... + 6096.

2^2381378 is an apocalyptic number.

2381378 is a deficient number, since it is larger than the sum of its proper divisors (1226362).

2381378 is a wasteful number, since it uses less digits than its factorization.

2381378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11892.

The product of its digits is 8064, while the sum is 32.

The square root of 2381378 is about 1543.1714097922. The cubic root of 2381378 is about 133.5394077249.

The spelling of 2381378 in words is "two million, three hundred eighty-one thousand, three hundred seventy-eight".