3040640 has 32 divisors (see below), whose sum is σ = 7270560. Its totient is φ = 1216000.

The previous prime is 3040633. The next prime is 3040649. The reversal of 3040640 is 460403.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3040649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736 + ... + 3015.

It is an arithmetic number, because the mean of its divisors is an integer number (227205).

Almost surely, 2^3040640 is an apocalyptic number.

It is an amenable number.

3040640 is an abundant number, since it is smaller than the sum of its proper divisors (4229920).

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

3040640 is an equidigital number, since it uses as much as digits as its factorization.

3040640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770 (or 4758 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3040640 is about 1743.7431003448. The cubic root of 3040640 is about 144.8732939891.

The spelling of 3040640 in words is "three million, forty thousand, six hundred forty".