38504013 has 16 divisors (see below), whose sum is σ = 55504320. Its totient is φ = 23659776.

The previous prime is 38503999. The next prime is 38504017. The reversal of 38504013 is 31040583.

It is not a de Polignac number, because 38504013 - 2⁹ = 38503501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38504017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7020 + ... + 11237.

It is an arithmetic number, because the mean of its divisors is an integer number (3469020).

Almost surely, 2^38504013 is an apocalyptic number.

It is an amenable number.

38504013 is a deficient number, since it is larger than the sum of its proper divisors (17000307).

38504013 is a wasteful number, since it uses less digits than its factorization.

38504013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18316.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 38504013 is about 6205.1601913246. The cubic root of 38504013 is about 337.6774024820.

Adding to 38504013 its reverse (31040583), we get a palindrome (69544596).

The spelling of 38504013 in words is "thirty-eight million, five hundred four thousand, thirteen".