38881647 has 24 divisors (see below), whose sum is σ = 67009200. Its totient is φ = 22217328.

The previous prime is 38881639. The next prime is 38881651. The reversal of 38881647 is 74618883.

38881647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38881647 - 2³ = 38881639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38881627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13372 + ... + 16017.

It is an arithmetic number, because the mean of its divisors is an integer number (2792050).

Almost surely, 2^38881647 is an apocalyptic number.

38881647 is a deficient number, since it is larger than the sum of its proper divisors (28127553).

38881647 is a wasteful number, since it uses less digits than its factorization.

38881647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29412 (or 29399 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 38881647 is about 6235.5149747234. The cubic root of 38881647 is about 338.7777539294. Note that the first 4 decimals are identical.

The spelling of 38881647 in words is "thirty-eight million, eight hundred eighty-one thousand, six hundred forty-seven".