2881305 has 32 divisors (see below), whose sum is σ = 5856000. Its totient is φ = 1316736.

The previous prime is 2881303. The next prime is 2881327. The reversal of 2881305 is 5031882.

It is a happy number.

It is not a de Polignac number, because 2881305 - 2¹ = 2881303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a zygodrome in base 14.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 580 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (183000).

2^2881305 is an apocalyptic number.

It is an amenable number.

2881305 is an abundant number, since it is smaller than the sum of its proper divisors (2974695).

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

2881305 is a wasteful number, since it uses less digits than its factorization.

2881305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070 (or 3064 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2881305 is about 1697.4407206144. The cubic root of 2881305 is about 142.2972184983.

The spelling of 2881305 in words is "two million, eight hundred eighty-one thousand, three hundred five".