4018040 has 32 divisors (see below), whose sum is σ = 9737280. Its totient is φ = 1483392.

The previous prime is 4018039. The next prime is 4018043. The reversal of 4018040 is 408104.

It is a happy number.

It is a super-2 number, since 2×4018040² = 32289290883200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4018043) 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, 3344 + ... + 4383.

It is an arithmetic number, because the mean of its divisors is an integer number (304290).

Almost surely, 2^4018040 is an apocalyptic number.

4018040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4018040 is an abundant number, since it is smaller than the sum of its proper divisors (5719240).

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

4018040 is a wasteful number, since it uses less digits than its factorization.

4018040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7751 (or 7747 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4018040 is about 2004.5049264095. The cubic root of 4018040 is about 158.9783866301.

The spelling of 4018040 in words is "four million, eighteen thousand, forty".