13040938 has 8 divisors (see below), whose sum is σ = 20712132. Its totient is φ = 6136896.

The previous prime is 13040917. The next prime is 13040957. The reversal of 13040938 is 83904031.

It can be written as a sum of positive squares in 2 ways, for example, as 10975969 + 2064969 = 3313^2 + 1437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191745 + ... + 191812.

Almost surely, 2^13040938 is an apocalyptic number.

13040938 is a deficient number, since it is larger than the sum of its proper divisors (7671194).

13040938 is a wasteful number, since it uses less digits than its factorization.

13040938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383576.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 13040938 is about 3611.2238922559. The cubic root of 13040938 is about 235.3800279351.

Adding to 13040938 its reverse (83904031), we get a palindrome (96944969).

The spelling of 13040938 in words is "thirteen million, forty thousand, nine hundred thirty-eight".