3881616 has 40 divisors (see below), whose sum is σ = 10103520. Its totient is φ = 1284096.

The previous prime is 3881611. The next prime is 3881659. The reversal of 3881616 is 6161883.

3881616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (3881611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9055 + ... + 9473.

It is an arithmetic number, because the mean of its divisors is an integer number (252588).

Almost surely, 2^3881616 is an apocalyptic number.

It is an amenable number.

3881616 is an abundant number, since it is smaller than the sum of its proper divisors (6221904).

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

3881616 is a wasteful number, since it uses less digits than its factorization.

3881616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 617 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 3881616 is about 1970.1817175073. The cubic root of 3881616 is about 157.1583726514.

The spelling of 3881616 in words is "three million, eight hundred eighty-one thousand, six hundred sixteen".