13405012 has 12 divisors (see below), whose sum is σ = 23701300. Its totient is φ = 6633216.

The previous prime is 13405009. The next prime is 13405037. The reversal of 13405012 is 21050431.

It can be written as a sum of positive squares in 2 ways, for example, as 10150596 + 3254416 = 3186^2 + 1804^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16887 + ... + 17662.

Almost surely, 2^13405012 is an apocalyptic number.

It is an amenable number.

13405012 is a deficient number, since it is larger than the sum of its proper divisors (10296288).

13405012 is a wasteful number, since it uses less digits than its factorization.

13405012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34650 (or 34648 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13405012 is about 3661.2855665736. The cubic root of 13405012 is about 237.5503834014.

Adding to 13405012 its reverse (21050431), we get a palindrome (34455443).

The spelling of 13405012 in words is "thirteen million, four hundred five thousand, twelve".