3870928 has 20 divisors (see below), whose sum is σ = 7569828. Its totient is φ = 1917440.

The previous prime is 3870913. The next prime is 3870929. The reversal of 3870928 is 8290783.

It can be written as a sum of positive squares in 2 ways, for example, as 1774224 + 2096704 = 1332^2 + 1448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870929) 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, 738 + ... + 2878.

Almost surely, 2^3870928 is an apocalyptic number.

It is an amenable number.

3870928 is a deficient number, since it is larger than the sum of its proper divisors (3698900).

3870928 is a wasteful number, since it uses less digits than its factorization.

3870928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262 (or 2256 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 3870928 is about 1967.4674076081. The cubic root of 3870928 is about 157.0139952634.

The spelling of 3870928 in words is "three million, eight hundred seventy thousand, nine hundred twenty-eight".