3888040 has 32 divisors (see below), whose sum is σ = 9422280. Its totient is φ = 1435392.

The previous prime is 3888029. The next prime is 3888047. The reversal of 3888040 is 408883.

It can be written as a sum of positive squares in 4 ways, for example, as 3378244 + 509796 = 1838^2 + 714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3887993 and 3888011.

It is not an unprimeable number, because it can be changed into a prime (3888047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219 + ... + 4258.

Almost surely, 2^3888040 is an apocalyptic number.

It is an amenable number.

3888040 is an abundant number, since it is smaller than the sum of its proper divisors (5534240).

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

3888040 is a wasteful number, since it uses less digits than its factorization.

3888040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7501 (or 7497 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 3888040 is about 1971.8113500028. The cubic root of 3888040 is about 157.2450228979.

The spelling of 3888040 in words is "three million, eight hundred eighty-eight thousand, forty".