38647 has 4 divisors (see below), whose sum is σ = 44176. Its totient is φ = 33120.

The previous prime is 38639. The next prime is 38651. The reversal of 38647 is 74683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38647 - 2³ = 38639 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8 and base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754 + ... + 2767.

It is an arithmetic number, because the mean of its divisors is an integer number (11044).

2³⁸⁶⁴⁷ is an apocalyptic number.

38647 is the 114-th hex number.

38647 is a deficient number, since it is larger than the sum of its proper divisors (5529).

38647 is an equidigital number, since it uses as much as digits as its factorization.

38647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528.

The product of its digits is 4032, while the sum is 28.

The square root of 38647 is about 196.5884025064. The cubic root of 38647 is about 33.8094881338.

The spelling of 38647 in words is "thirty-eight thousand, six hundred forty-seven".