26423649 has 12 divisors (see below), whose sum is σ = 43620096. Its totient is φ = 15099192.

The previous prime is 26423599. The next prime is 26423653. The reversal of 26423649 is 94632462.

26423649 is a `hidden beast` number, since 2 + 6 + 4 + 2 + 3 + 649 = 666.

It is not a de Polignac number, because 26423649 - 2²⁰ = 25375073 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (26423659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209649 + ... + 209774.

It is an arithmetic number, because the mean of its divisors is an integer number (3635008).

Almost surely, 2^26423649 is an apocalyptic number.

It is an amenable number.

26423649 is a deficient number, since it is larger than the sum of its proper divisors (17196447).

26423649 is a wasteful number, since it uses less digits than its factorization.

26423649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419436 (or 419433 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 26423649 is about 5140.3938565055. The cubic root of 26423649 is about 297.8499950717.

It can be divided in two parts, 26423 and 649, that added together give a palindrome (27072).

The spelling of 26423649 in words is "twenty-six million, four hundred twenty-three thousand, six hundred forty-nine".