3857870 has 32 divisors (see below), whose sum is σ = 7348320. Its totient is φ = 1456000.

The previous prime is 3857869. The next prime is 3857873. The reversal of 3857870 is 787583.

3857870 = 1133² + 1134² + 1135².

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15245 + ... + 15495.

It is an arithmetic number, because the mean of its divisors is an integer number (229635).

Almost surely, 2^3857870 is an apocalyptic number.

3857870 is a deficient number, since it is larger than the sum of its proper divisors (3490450).

3857870 is a wasteful number, since it uses less digits than its factorization.

3857870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 3857870 is about 1964.1461249103. The cubic root of 3857870 is about 156.8372419088.

The spelling of 3857870 in words is "three million, eight hundred fifty-seven thousand, eight hundred seventy".