13508426 has 4 divisors (see below), whose sum is σ = 20262642. Its totient is φ = 6754212.

The previous prime is 13508423. The next prime is 13508471. The reversal of 13508426 is 62480531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10272025 + 3236401 = 3205^2 + 1799^2 .

It is a Curzon number.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (13508423) 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 as a sum of consecutive naturals, namely, 3377105 + ... + 3377108.

Almost surely, 2^13508426 is an apocalyptic number.

13508426 is a deficient number, since it is larger than the sum of its proper divisors (6754216).

13508426 is an equidigital number, since it uses as much as digits as its factorization.

13508426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6754215.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 13508426 is about 3675.3810686785. The cubic root of 13508426 is about 238.1596861637.

Adding to 13508426 its reverse (62480531), we get a palindrome (75988957).

The spelling of 13508426 in words is "thirteen million, five hundred eight thousand, four hundred twenty-six".