38681047 has 4 divisors (see below), whose sum is σ = 39504096. Its totient is φ = 37858000.

The previous prime is 38681033. The next prime is 38681051. The reversal of 38681047 is 74018683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74018683 = 181 ⋅408943.

It is a cyclic number.

It is not a de Polignac number, because 38681047 - 2⁷ = 38680919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38680997 and 38681015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38681057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411454 + ... + 411547.

It is an arithmetic number, because the mean of its divisors is an integer number (9876024).

Almost surely, 2^38681047 is an apocalyptic number.

38681047 is a deficient number, since it is larger than the sum of its proper divisors (823049).

38681047 is an equidigital number, since it uses as much as digits as its factorization.

38681047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823048.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 38681047 is about 6219.4088947423. The cubic root of 38681047 is about 338.1941364567.

The spelling of 38681047 in words is "thirty-eight million, six hundred eighty-one thousand, forty-seven".