3888840 has 64 divisors (see below), whose sum is σ = 12182400. Its totient is φ = 991232.

The previous prime is 3888823. The next prime is 3888847. The reversal of 3888840 is 488883.

It is not an unprimeable number, because it can be changed into a prime (3888847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056 + ... + 3464.

It is an arithmetic number, because the mean of its divisors is an integer number (190350).

Almost surely, 2^3888840 is an apocalyptic number.

3888840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3888840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6091200).

3888840 is an abundant number, since it is smaller than the sum of its proper divisors (8293560).

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

3888840 is a wasteful number, since it uses less digits than its factorization.

3888840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 3888840 is about 1972.0141987318. The cubic root of 3888840 is about 157.2558070283.

The spelling of 3888840 in words is "three million, eight hundred eighty-eight thousand, eight hundred forty".