3540040 has 64 divisors (see below), whose sum is σ = 9331200. Its totient is φ = 1183488.

The previous prime is 3539971. The next prime is 3540041. The reversal of 3540040 is 400453.

It is a junction number, because it is equal to n+sod(n) for n = 3539996 and 3540023.

It is not an unprimeable number, because it can be changed into a prime (3540041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13026 + ... + 13294.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

Almost surely, 2^3540040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3540040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4665600).

3540040 is an abundant number, since it is smaller than the sum of its proper divisors (5791160).

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

3540040 is a wasteful number, since it uses less digits than its factorization.

3540040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3540040 is about 1881.4994020727. The cubic root of 3540040 is about 152.4062309873.

Adding to 3540040 its reverse (400453), we get a palindrome (3940493).

The spelling of 3540040 in words is "three million, five hundred forty thousand, forty".