26420013 has 20 divisors (see below), whose sum is σ = 41546560. Its totient is φ = 16685352.

The previous prime is 26420011. The next prime is 26420047. The reversal of 26420013 is 31002462.

It is a happy number.

It is not a de Polignac number, because 26420013 - 2¹ = 26420011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26420011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7045 + ... + 10122.

It is an arithmetic number, because the mean of its divisors is an integer number (2077328).

Almost surely, 2^26420013 is an apocalyptic number.

It is an amenable number.

26420013 is a deficient number, since it is larger than the sum of its proper divisors (15126547).

26420013 is a wasteful number, since it uses less digits than its factorization.

26420013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17198 (or 17189 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 26420013 is about 5140.0401749403. The cubic root of 26420013 is about 297.8363326607.

Adding to 26420013 its reverse (31002462), we get a palindrome (57422475).

The spelling of 26420013 in words is "twenty-six million, four hundred twenty thousand, thirteen".