26078243 has 4 divisors (see below), whose sum is σ = 26096688. Its totient is φ = 26059800.

The previous prime is 26078237. The next prime is 26078257. The reversal of 26078243 is 34287062.

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 26078243 - 2⁶ = 26078179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26078263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6908 + ... + 9993.

It is an arithmetic number, because the mean of its divisors is an integer number (6524172).

Almost surely, 2^26078243 is an apocalyptic number.

26078243 is a deficient number, since it is larger than the sum of its proper divisors (18445).

26078243 is a wasteful number, since it uses less digits than its factorization.

26078243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18444.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 26078243 is about 5106.6861074478. The cubic root of 26078243 is about 296.5464817781.

The spelling of 26078243 in words is "twenty-six million, seventy-eight thousand, two hundred forty-three".