3004905 has 16 divisors (see below), whose sum is σ = 4841280. Its totient is φ = 1591488.

The previous prime is 3004901. The next prime is 3004909. The reversal of 3004905 is 5094003.

It is an interprime number because it is at equal distance from previous prime (3004901) and next prime (3004909).

It is not a de Polignac number, because 3004905 - 2² = 3004901 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3004901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1831 + ... + 3059.

It is an arithmetic number, because the mean of its divisors is an integer number (302580).

Almost surely, 2^3004905 is an apocalyptic number.

It is an amenable number.

3004905 is a deficient number, since it is larger than the sum of its proper divisors (1836375).

3004905 is a wasteful number, since it uses less digits than its factorization.

3004905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 3004905 is about 1733.4661808065. The cubic root of 3004905 is about 144.3035168328.

Adding to 3004905 its sum of digits (21), we get a triangular number (3004926 = T₂₄₅₁).

Adding to 3004905 its reverse (5094003), we get a palindrome (8098908).

The spelling of 3004905 in words is "three million, four thousand, nine hundred five".