13011426 has 48 divisors (see below), whose sum is σ = 30216888. Its totient is φ = 4032000.

The previous prime is 13011421. The next prime is 13011431. The reversal of 13011426 is 62411031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13011421) and next prime (13011431).

It can be written as a sum of positive squares in 4 ways, for example, as 11799225 + 1212201 = 3435^2 + 1101^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13011399 and 13011408.

It is not an unprimeable number, because it can be changed into a prime (13011421) 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 23 ways as a sum of consecutive naturals, for example, 30696 + ... + 31116.

Almost surely, 2^13011426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13011426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15108444).

13011426 is an abundant number, since it is smaller than the sum of its proper divisors (17205462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13011426 is a wasteful number, since it uses less digits than its factorization.

13011426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 13011426 is about 3607.1354285638. The cubic root of 13011426 is about 235.2023366768.

Adding to 13011426 its reverse (62411031), we get a palindrome (75422457).

The spelling of 13011426 in words is "thirteen million, eleven thousand, four hundred twenty-six".