4030040 has 64 divisors (see below), whose sum is σ = 10670400. Its totient is φ = 1340928.

The previous prime is 4030007. The next prime is 4030051. The reversal of 4030040 is 400304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10166 + ... + 10554.

It is an arithmetic number, because the mean of its divisors is an integer number (166725).

Almost surely, 2^4030040 is an apocalyptic number.

4030040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4030040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5335200).

4030040 is an abundant number, since it is smaller than the sum of its proper divisors (6640360).

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

4030040 is a wasteful number, since it uses less digits than its factorization.

4030040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 4030040 is about 2007.4959526734. The cubic root of 4030040 is about 159.1364939502.

Adding to 4030040 its reverse (400304), we get a palindrome (4430344).

The spelling of 4030040 in words is "four million, thirty thousand, forty", and thus it is an eban number.