26978871 has 8 divisors (see below), whose sum is σ = 36581760. Its totient is φ = 17680952.

The previous prime is 26978857. The next prime is 26978899. The reversal of 26978871 is 17887962.

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 26978871 - 2⁶ = 26978807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26978871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26978821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76035 + ... + 76388.

It is an arithmetic number, because the mean of its divisors is an integer number (4572720).

Almost surely, 2^26978871 is an apocalyptic number.

26978871 is a deficient number, since it is larger than the sum of its proper divisors (9602889).

26978871 is a wasteful number, since it uses less digits than its factorization.

26978871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152485.

The product of its digits is 338688, while the sum is 48.

The square root of 26978871 is about 5194.1188858169. The cubic root of 26978871 is about 299.9217240225.

Subtracting from 26978871 its reverse (17887962), we obtain a palindrome (9090909).

The spelling of 26978871 in words is "twenty-six million, nine hundred seventy-eight thousand, eight hundred seventy-one".