26378243 has 4 divisors (see below), whose sum is σ = 26452080. Its totient is φ = 26304408.

The previous prime is 26378201. The next prime is 26378249. The reversal of 26378243 is 34287362.

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

It is a cyclic number.

It is not a de Polignac number, because 26378243 - 2¹⁴ = 26361859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26378249) 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 3 ways as a sum of consecutive naturals, for example, 36380 + ... + 37097.

It is an arithmetic number, because the mean of its divisors is an integer number (6613020).

Almost surely, 2^26378243 is an apocalyptic number.

26378243 is a deficient number, since it is larger than the sum of its proper divisors (73837).

26378243 is an equidigital number, since it uses as much as digits as its factorization.

26378243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73836.

The product of its digits is 48384, while the sum is 35.

The square root of 26378243 is about 5135.9753698786. The cubic root of 26378243 is about 297.6792902754.

The spelling of 26378243 in words is "twenty-six million, three hundred seventy-eight thousand, two hundred forty-three".