3870040 has 32 divisors (see below), whose sum is σ = 8991360. Its totient is φ = 1497600.

The previous prime is 3870037. The next prime is 3870047. The reversal of 3870040 is 400783.

3870040 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3869993 and 3870020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870047) 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, 321 + ... + 2800.

It is an arithmetic number, because the mean of its divisors is an integer number (280980).

Almost surely, 2^3870040 is an apocalyptic number.

It is an amenable number.

3870040 is an abundant number, since it is smaller than the sum of its proper divisors (5121320).

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

3870040 is a wasteful number, since it uses less digits than its factorization.

3870040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163 (or 3159 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 3870040 is about 1967.2417238357. The cubic root of 3870040 is about 157.0019878851.

The spelling of 3870040 in words is "three million, eight hundred seventy thousand, forty".