2881129 has 4 divisors (see below), whose sum is σ = 2948176. Its totient is φ = 2814084.

The previous prime is 2881127. The next prime is 2881139. The reversal of 2881129 is 9211882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2881129 - 2¹ = 2881127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2881129.

It is not an unprimeable number, because it can be changed into a prime (2881127) 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, 33459 + ... + 33544.

It is an arithmetic number, because the mean of its divisors is an integer number (737044).

2^2881129 is an apocalyptic number.

It is an amenable number.

2881129 is a deficient number, since it is larger than the sum of its proper divisors (67047).

2881129 is an equidigital number, since it uses as much as digits as its factorization.

2881129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67046.

The product of its digits is 2304, while the sum is 31.

The square root of 2881129 is about 1697.3888770697. The cubic root of 2881129 is about 142.2943211051.

The spelling of 2881129 in words is "two million, eight hundred eighty-one thousand, one hundred twenty-nine".