2809064 has 8 divisors (see below), whose sum is σ = 5267010. Its totient is φ = 1404528.

The previous prime is 2809019. The next prime is 2809069. The reversal of 2809064 is 4609082.

It can be written as a sum of positive squares in only one way, i.e., 2788900 + 20164 = 1670^2 + 142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2809069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175559 + ... + 175574.

2^2809064 is an apocalyptic number.

It is an amenable number.

2809064 is a deficient number, since it is larger than the sum of its proper divisors (2457946).

2809064 is a wasteful number, since it uses less digits than its factorization.

2809064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351139 (or 351135 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2809064 is about 1676.0262527777. The cubic root of 2809064 is about 141.0978982446.

The spelling of 2809064 in words is "two million, eight hundred nine thousand, sixty-four".