26040805 has 24 divisors (see below), whose sum is σ = 36636408. Its totient is φ = 17716608.

The previous prime is 26040803. The next prime is 26040809. The reversal of 26040805 is 50804062.

It can be written as a sum of positive squares in 4 ways, for example, as 7568001 + 18472804 = 2751^2 + 4298^2 .

It is not a de Polignac number, because 26040805 - 2¹ = 26040803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26040805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26040803) 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, 38127 + ... + 38803.

It is an arithmetic number, because the mean of its divisors is an integer number (1526517).

Almost surely, 2^26040805 is an apocalyptic number.

It is an amenable number.

26040805 is a deficient number, since it is larger than the sum of its proper divisors (10595603).

26040805 is a wasteful number, since it uses less digits than its factorization.

26040805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 26040805 is about 5103.0192043534. The cubic root of 26040805 is about 296.4045061580.

Adding to 26040805 its reverse (50804062), we get a palindrome (76844867).

The spelling of 26040805 in words is "twenty-six million, forty thousand, eight hundred five".