3863728 has 40 divisors (see below), whose sum is σ = 8459280. Its totient is φ = 1693440.

The previous prime is 3863687. The next prime is 3863737. The reversal of 3863728 is 8273683.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4726 + ... + 5482.

It is an arithmetic number, because the mean of its divisors is an integer number (211482).

Almost surely, 2^3863728 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 3863728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4229640).

3863728 is an abundant number, since it is smaller than the sum of its proper divisors (4595552).

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

3863728 is a wasteful number, since it uses less digits than its factorization.

3863728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 799 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 3863728 is about 1965.6367924924. The cubic root of 3863728 is about 156.9165851670.

It can be divided in two parts, 386 and 3728, that added together give a palindrome (4114).

The spelling of 3863728 in words is "three million, eight hundred sixty-three thousand, seven hundred twenty-eight".