26430013 has 4 divisors (see below), whose sum is σ = 27579168. Its totient is φ = 25280860.

The previous prime is 26429971. The next prime is 26430023. The reversal of 26430013 is 31003462.

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 26430013 - 2¹³ = 26421821 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 (26430023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574543 + ... + 574588.

It is an arithmetic number, because the mean of its divisors is an integer number (6894792).

Almost surely, 2^26430013 is an apocalyptic number.

26430013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

26430013 is a deficient number, since it is larger than the sum of its proper divisors (1149155).

26430013 is a wasteful number, since it uses less digits than its factorization.

26430013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149154.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 26430013 is about 5141.0128379532. The cubic root of 26430013 is about 297.8739050323.

Adding to 26430013 its reverse (31003462), we get a palindrome (57433475).

The spelling of 26430013 in words is "twenty-six million, four hundred thirty thousand, thirteen".