26378 has 12 divisors (see below), whose sum is σ = 43890. Its totient is φ = 11880.

The previous prime is 26371. The next prime is 26387. The reversal of 26378 is 87362.

It can be written as a sum of positive squares in only one way, i.e., 20449 + 5929 = 143^2 + 77^2 .

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (26371) 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 in 5 ways as a sum of consecutive naturals, for example, 188 + ... + 296.

2²⁶³⁷⁸ is an apocalyptic number.

26378 is a deficient number, since it is larger than the sum of its proper divisors (17512).

26378 is a wasteful number, since it uses less digits than its factorization.

26378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 122 counting only the distinct ones).

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

The square root of 26378 is about 162.4130536626. The cubic root of 26378 is about 29.7678376185.

It can be divided in two parts, 26 and 378, that added together give a palindrome (404).

The spelling of 26378 in words is "twenty-six thousand, three hundred seventy-eight".