2881396 has 36 divisors (see below), whose sum is σ = 5986596. Its totient is φ = 1209600.

The previous prime is 2881391. The next prime is 2881397. The reversal of 2881396 is 6931882.

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 1920996 = 980^2 + 1386^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11836 + ... + 12076.

2^2881396 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 2881396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2993298).

2881396 is an abundant number, since it is smaller than the sum of its proper divisors (3105200).

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

2881396 is a wasteful number, since it uses less digits than its factorization.

2881396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 311 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 2881396 is about 1697.4675254626. The cubic root of 2881396 is about 142.2987165360.

The spelling of 2881396 in words is "two million, eight hundred eighty-one thousand, three hundred ninety-six".