26809244 has 72 divisors (see below), whose sum is σ = 60686304. Its totient is φ = 10137600.

The previous prime is 26809243. The next prime is 26809261. The reversal of 26809244 is 44290862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26809243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138812 + ... + 139004.

Almost surely, 2^26809244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26809244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30343152).

26809244 is an abundant number, since it is smaller than the sum of its proper divisors (33877060).

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

26809244 is a wasteful number, since it uses less digits than its factorization.

26809244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 26809244 is about 5177.7643824338. The cubic root of 26809244 is about 299.2918259099.

The spelling of 26809244 in words is "twenty-six million, eight hundred nine thousand, two hundred forty-four".