3884640 has 48 divisors (see below), whose sum is σ = 12238128. Its totient is φ = 1035776.

The previous prime is 3884609. The next prime is 3884659. The reversal of 3884640 is 464883.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 3567 + ... + 4526.

It is an arithmetic number, because the mean of its divisors is an integer number (254961).

Almost surely, 2^3884640 is an apocalyptic number.

3884640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3884640 is an abundant number, since it is smaller than the sum of its proper divisors (8353488).

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

3884640 is a wasteful number, since it uses less digits than its factorization.

3884640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111 (or 8103 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 3884640 is about 1970.9490099949. The cubic root of 3884640 is about 157.1991738330.

The spelling of 3884640 in words is "three million, eight hundred eighty-four thousand, six hundred forty".