26394013 has 4 divisors (see below), whose sum is σ = 27946620. Its totient is φ = 24841408.

The previous prime is 26394001. The next prime is 26394019. The reversal of 26394013 is 31049362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31049362 = 2 ⋅15524681.

It can be written as a sum of positive squares in 2 ways, for example, as 17791524 + 8602489 = 4218^2 + 2933^2 .

It is a cyclic number.

It is not a de Polignac number, because 26394013 - 2⁵ = 26393981 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 (26394019) 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, 776278 + ... + 776311.

It is an arithmetic number, because the mean of its divisors is an integer number (6986655).

Almost surely, 2^26394013 is an apocalyptic number.

It is an amenable number.

26394013 is a deficient number, since it is larger than the sum of its proper divisors (1552607).

26394013 is a wasteful number, since it uses less digits than its factorization.

26394013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552606.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 26394013 is about 5137.5103892839. The cubic root of 26394013 is about 297.7386001041.

The spelling of 26394013 in words is "twenty-six million, three hundred ninety-four thousand, thirteen".