3857740 has 12 divisors (see below), whose sum is σ = 8101296. Its totient is φ = 1543088.

The previous prime is 3857723. The next prime is 3857743. The reversal of 3857740 is 477583.

It is a junction number, because it is equal to n+sod(n) for n = 3857696 and 3857705.

It is not an unprimeable number, because it can be changed into a prime (3857743) 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 3 ways as a sum of consecutive naturals, for example, 96424 + ... + 96463.

It is an arithmetic number, because the mean of its divisors is an integer number (675108).

Almost surely, 2^3857740 is an apocalyptic number.

It is an amenable number.

3857740 is an abundant number, since it is smaller than the sum of its proper divisors (4243556).

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

3857740 is a wasteful number, since it uses less digits than its factorization.

3857740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192896 (or 192894 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 3857740 is about 1964.1130313706. The cubic root of 3857740 is about 156.8354802225.

The spelling of 3857740 in words is "three million, eight hundred fifty-seven thousand, seven hundred forty".