26879790 has 64 divisors (see below), whose sum is σ = 76124160. Its totient is φ = 5944320.

The previous prime is 26879789. The next prime is 26879849. The reversal of 26879790 is 9797862.

It is a super-2 number, since 2×26879790² = 1445046220888200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4446 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (1189440).

Almost surely, 2^26879790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26879790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38062080).

26879790 is an abundant number, since it is smaller than the sum of its proper divisors (49244370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26879790 is a wasteful number, since it uses less digits than its factorization.

26879790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 26879790 is about 5184.5723063721. The cubic root of 26879790 is about 299.5541153958.

The spelling of 26879790 in words is "twenty-six million, eight hundred seventy-nine thousand, seven hundred ninety".