38928861 has 12 divisors (see below), whose sum is σ = 59538492. Its totient is φ = 24425856.

The previous prime is 38928833. The next prime is 38928881. The reversal of 38928861 is 16882983.

It can be written as a sum of positive squares in 2 ways, for example, as 15163236 + 23765625 = 3894^2 + 4875^2 .

It is not a de Polignac number, because 38928861 - 2¹¹ = 38926813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38928881) 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 11 ways as a sum of consecutive naturals, for example, 127066 + ... + 127371.

It is an arithmetic number, because the mean of its divisors is an integer number (4961541).

Almost surely, 2^38928861 is an apocalyptic number.

It is an amenable number.

38928861 is a deficient number, since it is larger than the sum of its proper divisors (20609631).

38928861 is a wasteful number, since it uses less digits than its factorization.

38928861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254460 (or 254457 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 38928861 is about 6239.2997203212. The cubic root of 38928861 is about 338.9148244516.

The spelling of 38928861 in words is "thirty-eight million, nine hundred twenty-eight thousand, eight hundred sixty-one".