3857830 has 8 divisors (see below), whose sum is σ = 6944112. Its totient is φ = 1543128.

The previous prime is 3857809. The next prime is 3857839. The reversal of 3857830 is 387583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3857839) 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, 192882 + ... + 192901.

It is an arithmetic number, because the mean of its divisors is an integer number (868014).

Almost surely, 2^3857830 is an apocalyptic number.

3857830 is a deficient number, since it is larger than the sum of its proper divisors (3086282).

3857830 is a wasteful number, since it uses less digits than its factorization.

3857830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385790.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 3857830 is about 1964.1359423421. The cubic root of 3857830 is about 156.8366998557.

The spelling of 3857830 in words is "three million, eight hundred fifty-seven thousand, eight hundred thirty".