2904845 has 4 divisors (see below), whose sum is σ = 3485820. Its totient is φ = 2323872.

The previous prime is 2904829. The next prime is 2904851. The reversal of 2904845 is 5484092.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 477481 + 2427364 = 691^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 2904845 - 2⁴ = 2904829 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290480 + ... + 290489.

It is an arithmetic number, because the mean of its divisors is an integer number (871455).

2^2904845 is an apocalyptic number.

It is an amenable number.

2904845 is a deficient number, since it is larger than the sum of its proper divisors (580975).

2904845 is an equidigital number, since it uses as much as digits as its factorization.

2904845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580974.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2904845 is about 1704.3605839141. The cubic root of 2904845 is about 142.6836863800.

The spelling of 2904845 in words is "two million, nine hundred four thousand, eight hundred forty-five".