38664015 has 16 divisors (see below), whose sum is σ = 66621408. Its totient is φ = 19034496.

The previous prime is 38664013. The next prime is 38664029. The reversal of 38664015 is 51046683.

It is not a de Polignac number, because 38664015 - 2¹ = 38664013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38664011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98944 + ... + 99333.

It is an arithmetic number, because the mean of its divisors is an integer number (4163838).

Almost surely, 2^38664015 is an apocalyptic number.

38664015 is a deficient number, since it is larger than the sum of its proper divisors (27957393).

38664015 is a wasteful number, since it uses less digits than its factorization.

38664015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198298.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 38664015 is about 6218.0394820233. The cubic root of 38664015 is about 338.1444914012.

The spelling of 38664015 in words is "thirty-eight million, six hundred sixty-four thousand, fifteen".