3857904 has 60 divisors (see below), whose sum is σ = 10974496. Its totient is φ = 1264896.

The previous prime is 3857891. The next prime is 3857911. The reversal of 3857904 is 4097583.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10329 + ... + 10695.

Almost surely, 2^3857904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3857904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5487248).

3857904 is an abundant number, since it is smaller than the sum of its proper divisors (7116592).

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

3857904 is a wasteful number, since it uses less digits than its factorization.

3857904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3857904 is about 1964.1547800517. The cubic root of 3857904 is about 156.8377026510.

It can be divided in two parts, 3857 and 904, that added together give a square (4761 = 69²).

The spelling of 3857904 in words is "three million, eight hundred fifty-seven thousand, nine hundred four".