2809016 has 32 divisors (see below), whose sum is σ = 6090240. Its totient is φ = 1189728.

The previous prime is 2809007. The next prime is 2809019. The reversal of 2809016 is 6109082.

2809016 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2809019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5525 + ... + 6011.

It is an arithmetic number, because the mean of its divisors is an integer number (190320).

2^2809016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2809016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3045120).

2809016 is an abundant number, since it is smaller than the sum of its proper divisors (3281224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2809016 is a wasteful number, since it uses less digits than its factorization.

2809016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603 (or 599 counting only the distinct ones).

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

The square root of 2809016 is about 1676.0119331317. The cubic root of 2809016 is about 141.0970945679.

The spelling of 2809016 in words is "two million, eight hundred nine thousand, sixteen".