2904040 has 32 divisors (see below), whose sum is σ = 6624000. Its totient is φ = 1145664.

The previous prime is 2904001. The next prime is 2904047. The reversal of 2904040 is 404092.

It is a junction number, because it is equal to n+sod(n) for n = 2903999 and 2904017.

It is not an unprimeable number, because it can be changed into a prime (2904047) 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, 2701 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (207000).

2^2904040 is an apocalyptic number.

2904040 is a gapful number since it is divisible by the number (20) 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 2904040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3312000).

2904040 is an abundant number, since it is smaller than the sum of its proper divisors (3719960).

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

2904040 is a wasteful number, since it uses less digits than its factorization.

2904040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2904040 is about 1704.1244086040. The cubic root of 2904040 is about 142.6705048414.

The spelling of 2904040 in words is "two million, nine hundred four thousand, forty".