4024040 has 32 divisors (see below), whose sum is σ = 9369000. Its totient is φ = 1553664.

The previous prime is 4024039. The next prime is 4024049. The reversal of 4024040 is 404204.

It can be written as a sum of positive squares in 4 ways, for example, as 2114116 + 1909924 = 1454^2 + 1382^2 .

It is not an unprimeable number, because it can be changed into a prime (4024049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575 + ... + 2894.

Almost surely, 2^4024040 is an apocalyptic number.

4024040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4024040 is an abundant number, since it is smaller than the sum of its proper divisors (5344960).

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

4024040 is a wasteful number, since it uses less digits than its factorization.

4024040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4024040 is about 2006.0009970087. Note that the first 3 decimals coincide. The cubic root of 4024040 is about 159.0574795808.

Adding to 4024040 its reverse (404204), we get a palindrome (4428244).

The spelling of 4024040 in words is "four million, twenty-four thousand, forty".