38920871 has 16 divisors (see below), whose sum is σ = 46513440. Its totient is φ = 32148480.

The previous prime is 38920823. The next prime is 38920883. The reversal of 38920871 is 17802983.

38920871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38920871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38920811) 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 15 ways as a sum of consecutive naturals, for example, 1835 + ... + 9011.

It is an arithmetic number, because the mean of its divisors is an integer number (2907090).

Almost surely, 2^38920871 is an apocalyptic number.

38920871 is a deficient number, since it is larger than the sum of its proper divisors (7592569).

38920871 is a wasteful number, since it uses less digits than its factorization.

38920871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 38920871 is about 6238.6593912474. The cubic root of 38920871 is about 338.8916358741.

The spelling of 38920871 in words is "thirty-eight million, nine hundred twenty thousand, eight hundred seventy-one".