3857540 has 12 divisors (see below), whose sum is σ = 8100876. Its totient is φ = 1543008.

The previous prime is 3857531. The next prime is 3857543. The reversal of 3857540 is 457583.

It is a happy number.

3857540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2334784 + 1522756 = 1528^2 + 1234^2 .

It is a super-2 number, since 2×3857540² = 29761229703200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3857497 and 3857506.

It is not an unprimeable number, because it can be changed into a prime (3857543) 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 3 ways as a sum of consecutive naturals, for example, 96419 + ... + 96458.

It is an arithmetic number, because the mean of its divisors is an integer number (675073).

Almost surely, 2^3857540 is an apocalyptic number.

It is an amenable number.

3857540 is an abundant number, since it is smaller than the sum of its proper divisors (4243336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3857540 is a wasteful number, since it uses less digits than its factorization.

3857540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192886 (or 192884 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 3857540 is about 1964.0621171440. The cubic root of 3857540 is about 156.8327698585.

The spelling of 3857540 in words is "three million, eight hundred fifty-seven thousand, five hundred forty".