26448581 has 4 divisors (see below), whose sum is σ = 26695872. Its totient is φ = 26201292.

The previous prime is 26448577. The next prime is 26448601. The reversal of 26448581 is 18584462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26448581 - 2² = 26448577 is a prime.

It is a super-2 number, since 2×26448581² = 1399054873827122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26441581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123485 + ... + 123698.

It is an arithmetic number, because the mean of its divisors is an integer number (6673968).

Almost surely, 2^26448581 is an apocalyptic number.

It is an amenable number.

26448581 is a deficient number, since it is larger than the sum of its proper divisors (247291).

26448581 is a wasteful number, since it uses less digits than its factorization.

26448581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247290.

The product of its digits is 61440, while the sum is 38.

The square root of 26448581 is about 5142.8183907270. The cubic root of 26448581 is about 297.9436442835.

The spelling of 26448581 in words is "twenty-six million, four hundred forty-eight thousand, five hundred eighty-one".