26878105 has 8 divisors (see below), whose sum is σ = 34151112. Its totient is φ = 20237568.

The previous prime is 26878097. The next prime is 26878121. The reversal of 26878105 is 50187862.

It can be written as a sum of positive squares in 4 ways, for example, as 10621081 + 16257024 = 3259^2 + 4032^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 26878105 - 2³ = 26878097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158022 + ... + 158191.

It is an arithmetic number, because the mean of its divisors is an integer number (4268889).

Almost surely, 2^26878105 is an apocalyptic number.

It is an amenable number.

26878105 is a deficient number, since it is larger than the sum of its proper divisors (7273007).

26878105 is a wasteful number, since it uses less digits than its factorization.

26878105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316235.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 26878105 is about 5184.4098024751. The cubic root of 26878105 is about 299.5478559319.

The spelling of 26878105 in words is "twenty-six million, eight hundred seventy-eight thousand, one hundred five".