4066040 has 32 divisors (see below), whose sum is σ = 9981360. Its totient is φ = 1478400.

The previous prime is 4066039. The next prime is 4066063. The reversal of 4066040 is 406604.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 4181 + ... + 5060.

Almost surely, 2^4066040 is an apocalyptic number.

4066040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4066040 is an abundant number, since it is smaller than the sum of its proper divisors (5915320).

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

4066040 is a wasteful number, since it uses less digits than its factorization.

4066040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263 (or 9259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4066040 is about 2016.4424117738. The cubic root of 4066040 is about 159.6089408165.

4066040 divided by its sum of digits (20) gives a palindrome (203302).

It can be divided in two parts, 406 and 6040, that added together give a palindrome (6446).

The spelling of 4066040 in words is "four million, sixty-six thousand, forty", and thus it is an eban number.