2865996 has 96 divisors (see below), whose sum is σ = 9031680. Its totient is φ = 767232.

The previous prime is 2865977. The next prime is 2866001. The reversal of 2865996 is 6995682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12741 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (94080).

2^2865996 is an apocalyptic number.

2865996 is the 1071-st heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2865996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4515840).

2865996 is an abundant number, since it is smaller than the sum of its proper divisors (6165684).

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

2865996 is a wasteful number, since it uses less digits than its factorization.

2865996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 252 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 2865996 is about 1692.9252789181. The cubic root of 2865996 is about 142.0447521447.

The spelling of 2865996 in words is "two million, eight hundred sixty-five thousand, nine hundred ninety-six".