13013810 has 16 divisors (see below), whose sum is σ = 23996952. Its totient is φ = 5078400.

The previous prime is 13013773. The next prime is 13013813. The reversal of 13013810 is 1831031.

It can be written as a sum of positive squares in 4 ways, for example, as 8404201 + 4609609 = 2899^2 + 2147^2 .

It is a super-2 number, since 2×13013810² = 338718501432200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13013813) 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 7 ways as a sum of consecutive naturals, for example, 15461 + ... + 16280.

Almost surely, 2^13013810 is an apocalyptic number.

13013810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13013810 is a deficient number, since it is larger than the sum of its proper divisors (10983142).

13013810 is a wasteful number, since it uses less digits than its factorization.

13013810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31789.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 13013810 is about 3607.4658695544. The cubic root of 13013810 is about 235.2167006706.

Adding to 13013810 its reverse (1831031), we get a palindrome (14844841).

The spelling of 13013810 in words is "thirteen million, thirteen thousand, eight hundred ten".