2881306 has 8 divisors (see below), whose sum is σ = 4361940. Its totient is φ = 1427328.

The previous prime is 2881303. The next prime is 2881327. The reversal of 2881306 is 6031882.

It can be written as a sum of positive squares in 2 ways, for example, as 2873025 + 8281 = 1695^2 + 91^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2881303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6391 + ... + 6826.

2^2881306 is an apocalyptic number.

2881306 is a deficient number, since it is larger than the sum of its proper divisors (1480634).

2881306 is a wasteful number, since it uses less digits than its factorization.

2881306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13328.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2881306 is about 1697.4410151755. The cubic root of 2881306 is about 142.2972349604.

The spelling of 2881306 in words is "two million, eight hundred eighty-one thousand, three hundred six".