2816009 has 16 divisors (see below), whose sum is σ = 3502080. Its totient is φ = 2209680.

The previous prime is 2815997. The next prime is 2816017. The reversal of 2816009 is 9006182.

It is not a de Polignac number, because 2816009 - 2⁴ = 2815993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2816029) 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, 3782 + ... + 4464.

It is an arithmetic number, because the mean of its divisors is an integer number (218880).

2^2816009 is an apocalyptic number.

It is an amenable number.

2816009 is a deficient number, since it is larger than the sum of its proper divisors (686071).

2816009 is a wasteful number, since it uses less digits than its factorization.

2816009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2816009 is about 1678.0968386836. The cubic root of 2816009 is about 141.2140838539.

The spelling of 2816009 in words is "two million, eight hundred sixteen thousand, nine".