2885881 has 4 divisors (see below), whose sum is σ = 2894500. Its totient is φ = 2877264.

The previous prime is 2885863. The next prime is 2885887. The reversal of 2885881 is 1885882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2418025 + 467856 = 1555^2 + 684^2 .

It is a cyclic number.

It is not a de Polignac number, because 2885881 - 2¹⁵ = 2853113 is a prime.

It is a super-2 number, since 2×2885881² = 16656618292322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2885887) 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, 3786 + ... + 4483.

It is an arithmetic number, because the mean of its divisors is an integer number (723625).

2^2885881 is an apocalyptic number.

It is an amenable number.

2885881 is a deficient number, since it is larger than the sum of its proper divisors (8619).

2885881 is an equidigital number, since it uses as much as digits as its factorization.

2885881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8618.

The product of its digits is 40960, while the sum is 40.

The square root of 2885881 is about 1698.7880974389. The cubic root of 2885881 is about 142.3725093431.

Subtracting from 2885881 its reverse (1885882), we obtain a palindrome (999999).

The spelling of 2885881 in words is "two million, eight hundred eighty-five thousand, eight hundred eighty-one".