13143738 has 32 divisors (see below), whose sum is σ = 27131904. Its totient is φ = 4242672.

The previous prime is 13143719. The next prime is 13143743. The reversal of 13143738 is 83734131.

13143738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13143738² = 345515697225288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35631 + ... + 35997.

It is an arithmetic number, because the mean of its divisors is an integer number (847872).

Almost surely, 2^13143738 is an apocalyptic number.

13143738 is an abundant number, since it is smaller than the sum of its proper divisors (13988166).

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

13143738 is a wasteful number, since it uses less digits than its factorization.

13143738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 6048, while the sum is 30.

The square root of 13143738 is about 3625.4293538835. The cubic root of 13143738 is about 235.9968997965.

Adding to 13143738 its reverse (83734131), we get a palindrome (96877869).

The spelling of 13143738 in words is "thirteen million, one hundred forty-three thousand, seven hundred thirty-eight".