3857872 has 10 divisors (see below), whose sum is σ = 7474658. Its totient is φ = 1928928.

The previous prime is 3857869. The next prime is 3857873. The reversal of 3857872 is 2787583.

It can be written as a sum of positive squares in only one way, i.e., 3857296 + 576 = 1964^2 + 24^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3857873) 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 as a sum of consecutive naturals, namely, 120543 + ... + 120574.

Almost surely, 2^3857872 is an apocalyptic number.

It is an amenable number.

3857872 is a deficient number, since it is larger than the sum of its proper divisors (3616786).

3857872 is a wasteful number, since it uses less digits than its factorization.

3857872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241125 (or 241119 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 3857872 is about 1964.1466340373. The cubic root of 3857872 is about 156.8372690113.

The spelling of 3857872 in words is "three million, eight hundred fifty-seven thousand, eight hundred seventy-two".