26839872 has 84 divisors (see below), whose sum is σ = 81486756. Its totient is φ = 8417280.

The previous prime is 26839861. The next prime is 26839903. The reversal of 26839872 is 27893862.

It can be written as a sum of positive squares in 2 ways, for example, as 14561856 + 12278016 = 3816^2 + 3504^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8422 + ... + 11162.

Almost surely, 2^26839872 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 26839872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40743378).

26839872 is an abundant number, since it is smaller than the sum of its proper divisors (54646884).

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

26839872 is a wasteful number, since it uses less digits than its factorization.

26839872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2763 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 26839872 is about 5180.7211853177. The cubic root of 26839872 is about 299.4057570282.

The spelling of 26839872 in words is "twenty-six million, eight hundred thirty-nine thousand, eight hundred seventy-two".