26828247 has 16 divisors (see below), whose sum is σ = 37775360. Its totient is φ = 16889472.

The previous prime is 26828239. The next prime is 26828257. The reversal of 26828247 is 74282862.

It is not a de Polignac number, because 26828247 - 2³ = 26828239 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26828257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24138 + ... + 25224.

It is an arithmetic number, because the mean of its divisors is an integer number (2360960).

Almost surely, 2^26828247 is an apocalyptic number.

26828247 is a deficient number, since it is larger than the sum of its proper divisors (10947113).

26828247 is a wasteful number, since it uses less digits than its factorization.

26828247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542.

The product of its digits is 86016, while the sum is 39.

The square root of 26828247 is about 5179.5991157618. The cubic root of 26828247 is about 299.3625241524.

The spelling of 26828247 in words is "twenty-six million, eight hundred twenty-eight thousand, two hundred forty-seven".