2378 has 8 divisors (see below), whose sum is σ = 3780. Its totient is φ = 1120.

The previous prime is 2377. The next prime is 2381. The reversal of 2378 is 8732.

2378 is nontrivially palindromic in base 14.

2378 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 2209 + 169 = 47^2 + 13^2 .

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

2378 is an undulating number in base 9 and base 14.

It is a plaindrome in base 10.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 78.

2²³⁷⁸ is an apocalyptic number.

2378 is a deficient number, since it is larger than the sum of its proper divisors (1402).

2378 is a wasteful number, since it uses less digits than its factorization.

2378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72.

The product of its digits is 336, while the sum is 20.

The square root of 2378 is about 48.7647413609. The cubic root of 2378 is about 13.3476235676.

It can be divided in two parts, 23 and 78, that added together give a palindrome (101).

The spelling of 2378 in words is "two thousand, three hundred seventy-eight".