2904081 has 4 divisors (see below), whose sum is σ = 3872112. Its totient is φ = 1936052.

The previous prime is 2904073. The next prime is 2904103. The reversal of 2904081 is 1804092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2904081 - 2³ = 2904073 is a prime.

It is a super-2 number, since 2×2904081² = 16867372909122, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2904001) 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 3 ways as a sum of consecutive naturals, for example, 484011 + ... + 484016.

It is an arithmetic number, because the mean of its divisors is an integer number (968028).

2^2904081 is an apocalyptic number.

It is an amenable number.

2904081 is a deficient number, since it is larger than the sum of its proper divisors (968031).

2904081 is an equidigital number, since it uses as much as digits as its factorization.

2904081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968030.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2904081 is about 1704.1364381997. The cubic root of 2904081 is about 142.6711762581.

It can be divided in two parts, 290 and 4081, that added together give a triangular number (4371 = T₉₃).

The spelling of 2904081 in words is "two million, nine hundred four thousand, eighty-one".