13129438 has 16 divisors (see below), whose sum is σ = 22780800. Its totient is φ = 5558616.

The previous prime is 13129427. The next prime is 13129463. The reversal of 13129438 is 83492131.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4488 + ... + 6811.

It is an arithmetic number, because the mean of its divisors is an integer number (1423800).

Almost surely, 2^13129438 is an apocalyptic number.

13129438 is a deficient number, since it is larger than the sum of its proper divisors (9651362).

13129438 is a wasteful number, since it uses less digits than its factorization.

13129438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11391.

The product of its digits is 5184, while the sum is 31.

The square root of 13129438 is about 3623.4566369697. The cubic root of 13129438 is about 235.9112828463.

The spelling of 13129438 in words is "thirteen million, one hundred twenty-nine thousand, four hundred thirty-eight".